f37664a2b8
This is necessary because some hosts do not have a properly set session.save_path parameter in php config, or do not have write access to the directory.
2385 lines
No EOL
112 KiB
PHP
2385 lines
No EOL
112 KiB
PHP
<?php
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// Shaarli 0.0.40 beta - Shaare your links...
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// The personal, minimalist, super-fast, no-database delicious clone. By sebsauvage.net
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// http://sebsauvage.net/wiki/doku.php?id=php:shaarli
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// Licence: http://www.opensource.org/licenses/zlib-license.php
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// Requires: php 5.1.x (but autocomplete fields will only work if you have php 5.2.x)
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// -----------------------------------------------------------------------------------------------
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// Hardcoded parameter (These parameters can be overwritten by creating the file /config/options.php)
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$GLOBALS['config']['DATADIR'] = 'data'; // Data subdirectory
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$GLOBALS['config']['CONFIG_FILE'] = $GLOBALS['config']['DATADIR'].'/config.php'; // Configuration file (user login/password)
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$GLOBALS['config']['DATASTORE'] = $GLOBALS['config']['DATADIR'].'/datastore.php'; // Data storage file.
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$GLOBALS['config']['LINKS_PER_PAGE'] = 20; // Default links per page.
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$GLOBALS['config']['IPBANS_FILENAME'] = $GLOBALS['config']['DATADIR'].'/ipbans.php'; // File storage for failures and bans.
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$GLOBALS['config']['BAN_AFTER'] = 4; // Ban IP after this many failures.
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$GLOBALS['config']['BAN_DURATION'] = 1800; // Ban duration for IP address after login failures (in seconds) (1800 sec. = 30 minutes)
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$GLOBALS['config']['OPEN_SHAARLI'] = false; // If true, anyone can add/edit/delete links without having to login
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$GLOBALS['config']['HIDE_TIMESTAMPS'] = false; // If true, the moment when links were saved are not shown to users that are not logged in.
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$GLOBALS['config']['ENABLE_THUMBNAILS'] = true; // Enable thumbnails in links.
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$GLOBALS['config']['CACHEDIR'] = 'cache'; // Cache directory for thumbnails for SLOW services (like flickr)
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$GLOBALS['config']['PAGECACHE'] = 'pagecache'; // Page cache directory.
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$GLOBALS['config']['ENABLE_LOCALCACHE'] = true; // Enable Shaarli to store thumbnail in a local cache. Disable to reduce webspace usage.
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$GLOBALS['config']['PUBSUBHUB_URL'] = ''; // PubSubHubbub support. Put an empty string to disable, or put your hub url here to enable.
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$GLOBALS['config']['UPDATECHECK_FILENAME'] = $GLOBALS['config']['DATADIR'].'/lastupdatecheck.txt'; // For updates check of Shaarli.
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$GLOBALS['config']['UPDATECHECK_INTERVAL'] = 86400 ; // Updates check frequency for Shaarli. 86400 seconds=24 hours
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// Note: You must have publisher.php in the same directory as Shaarli index.php
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// -----------------------------------------------------------------------------------------------
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// You should not touch below (or at your own risks !)
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// Optionnal config file.
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if (is_file($GLOBALS['config']['DATADIR'].'/options.php')) require($GLOBALS['config']['DATADIR'].'/options.php');
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define('shaarli_version','0.0.40 beta');
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define('PHPPREFIX','<?php /* '); // Prefix to encapsulate data in php code.
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define('PHPSUFFIX',' */ ?>'); // Suffix to encapsulate data in php code.
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// Force cookie path (but do not change lifetime)
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$cookie=session_get_cookie_params();
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$cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
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session_set_cookie_params($cookie['lifetime'],$cookiedir); // Set default cookie expiration and path.
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// Set session parameters on server side.
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define('INACTIVITY_TIMEOUT',3600); // (in seconds). If the user does not access any page within this time, his/her session is considered expired.
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ini_set('session.use_cookies', 1); // Use cookies to store session.
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ini_set('session.use_only_cookies', 1); // Force cookies for session (phpsessionID forbidden in URL)
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ini_set('session.use_trans_sid', false); // Prevent php to use sessionID in URL if cookies are disabled.
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session_name('shaarli');
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if (session_id() == '') session_start(); // Start session if needed (Some server auto-start sessions).
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// PHP Settings
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ini_set('max_input_time','60'); // High execution time in case of problematic imports/exports.
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ini_set('memory_limit', '128M'); // Try to set max upload file size and read (May not work on some hosts).
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ini_set('post_max_size', '16M');
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ini_set('upload_max_filesize', '16M');
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checkphpversion();
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error_reporting(E_ALL^E_WARNING); // See all error except warnings.
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//error_reporting(-1); // See all errors (for debugging only)
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include "inc/rain.tpl.class.php"; //include Rain TPL
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raintpl::$tpl_dir = "tpl/"; // template directory
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if (!is_dir('tmp')) { mkdir('tmp',0705); chmod('tmp',0705); }
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raintpl::$cache_dir = "tmp/"; // cache directory
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ob_start(); // Output buffering for the page cache.
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// In case stupid admin has left magic_quotes enabled in php.ini:
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if (get_magic_quotes_gpc())
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{
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function stripslashes_deep($value) { $value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value); return $value; }
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$_POST = array_map('stripslashes_deep', $_POST);
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$_GET = array_map('stripslashes_deep', $_GET);
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$_COOKIE = array_map('stripslashes_deep', $_COOKIE);
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}
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// Prevent caching on client side or proxy: (yes, it's ugly)
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header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
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header("Cache-Control: no-store, no-cache, must-revalidate");
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header("Cache-Control: post-check=0, pre-check=0", false);
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header("Pragma: no-cache");
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// Directories creations (Note that your web host may require differents rights than 705.)
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if (!is_dir($GLOBALS['config']['DATADIR'])) { mkdir($GLOBALS['config']['DATADIR'],0705); chmod($GLOBALS['config']['DATADIR'],0705); }
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if (!is_dir('tmp')) { mkdir('tmp',0705); chmod('tmp',0705); } // For RainTPL temporary files.
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if (!is_file($GLOBALS['config']['DATADIR'].'/.htaccess')) { file_put_contents($GLOBALS['config']['DATADIR'].'/.htaccess',"Allow from none\nDeny from all\n"); } // Protect data files.
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if ($GLOBALS['config']['ENABLE_LOCALCACHE'])
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{
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if (!is_dir($GLOBALS['config']['CACHEDIR'])) { mkdir($GLOBALS['config']['CACHEDIR'],0705); chmod($GLOBALS['config']['CACHEDIR'],0705); }
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if (!is_file($GLOBALS['config']['CACHEDIR'].'/.htaccess')) { file_put_contents($GLOBALS['config']['CACHEDIR'].'/.htaccess',"Allow from none\nDeny from all\n"); } // Protect data files.
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}
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// Run config screen if first run:
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if (!is_file($GLOBALS['config']['CONFIG_FILE'])) install();
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require $GLOBALS['config']['CONFIG_FILE']; // Read login/password hash into $GLOBALS.
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// Handling of old config file which do not have the new parameters.
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if (empty($GLOBALS['title'])) $GLOBALS['title']='Shared links on '.htmlspecialchars(indexUrl());
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if (empty($GLOBALS['timezone'])) $GLOBALS['timezone']=date_default_timezone_get();
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if (empty($GLOBALS['disablesessionprotection'])) $GLOBALS['disablesessionprotection']=false;
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autoLocale(); // Sniff browser language and set date format accordingly.
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header('Content-Type: text/html; charset=utf-8'); // We use UTF-8 for proper international characters handling.
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// Check php version
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function checkphpversion()
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{
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if (version_compare(PHP_VERSION, '5.1.0') < 0)
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{
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header('Content-Type: text/plain; charset=utf-8');
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echo 'Your server supports php '.PHP_VERSION.'. Shaarli requires at least php 5.1.0, and thus cannot run. Sorry.';
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exit;
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}
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}
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// Checks if an update is available for Shaarli.
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// (at most once a day, and only for registered user.)
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// Output: '' = no new version.
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// other= the available version.
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function checkUpdate()
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{
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if (!isLoggedIn()) return ''; // Do not check versions for visitors.
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// Get latest version number at most once a day.
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if (!is_file($GLOBALS['config']['UPDATECHECK_FILENAME']) || (filemtime($GLOBALS['config']['UPDATECHECK_FILENAME'])<time()-($GLOBALS['config']['UPDATECHECK_INTERVAL'])))
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{
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$version=shaarli_version;
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list($httpstatus,$headers,$data) = getHTTP('http://sebsauvage.net/files/shaarli_version.txt',2);
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if (strpos($httpstatus,'200 OK')!==false) $version=$data;
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// If failed, nevermind. We don't want to bother the user with that.
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file_put_contents($GLOBALS['config']['UPDATECHECK_FILENAME'],$version); // touch file date
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}
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// Compare versions:
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$newestversion=file_get_contents($GLOBALS['config']['UPDATECHECK_FILENAME']);
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if (version_compare($newestversion,shaarli_version)==1) return $newestversion;
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return '';
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}
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// -----------------------------------------------------------------------------------------------
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// Simple cache system (mainly for the RSS/ATOM feeds).
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class pageCache
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{
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private $url; // Full URL of the page to cache (typically the value returned by pageUrl())
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private $shouldBeCached; // boolean: Should this url be cached ?
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private $filename; // Name of the cache file for this url
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/*
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$url = url (typically the value returned by pageUrl())
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$shouldBeCached = boolean. If false, the cache will be disabled.
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*/
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public function __construct($url,$shouldBeCached)
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{
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$this->url = $url;
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$this->filename = $GLOBALS['config']['PAGECACHE'].'/'.sha1($url).'.cache';
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$this->shouldBeCached = $shouldBeCached;
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}
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// If the page should be cached and a cached version exists,
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// returns the cached version (otherwise, return null).
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public function cachedVersion()
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{
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if (!$this->shouldBeCached) return null;
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if (is_file($this->filename)) { return file_get_contents($this->filename); exit; }
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return null;
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}
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// Put a page in the cache.
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public function cache($page)
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{
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if (!$this->shouldBeCached) return;
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if (!is_dir($GLOBALS['config']['PAGECACHE'])) { mkdir($GLOBALS['config']['PAGECACHE'],0705); chmod($GLOBALS['config']['PAGECACHE'],0705); }
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file_put_contents($this->filename,$page);
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}
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// Purge the whole cache.
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// (call with pageCache::purgeCache())
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public static function purgeCache()
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{
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if (is_dir($GLOBALS['config']['PAGECACHE']))
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{
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$handler = opendir($GLOBALS['config']['PAGECACHE']);
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if ($handler!==false)
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{
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while (($filename = readdir($handler))!==false)
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{
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if (endsWith($filename,'.cache')) { unlink($GLOBALS['config']['PAGECACHE'].'/'.$filename); }
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}
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closedir($handler);
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}
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}
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}
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}
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// -----------------------------------------------------------------------------------------------
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// Log to text file
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function logm($message)
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{
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$t = strval(date('Y/m/d_H:i:s')).' - '.$_SERVER["REMOTE_ADDR"].' - '.strval($message)."\n";
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file_put_contents($GLOBALS['config']['DATADIR'].'/log.txt',$t,FILE_APPEND);
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}
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// Same as nl2br(), but escapes < and >
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function nl2br_escaped($html)
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{
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return str_replace('>','>',str_replace('<','<',nl2br($html)));
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}
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/* Returns the small hash of a string
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eg. smallHash('20111006_131924') --> yZH23w
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Small hashes:
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- are unique (well, as unique as crc32, at last)
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- are always 6 characters long.
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- only use the following characters: a-z A-Z 0-9 - _ @
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- are NOT cryptographically secure (they CAN be forged)
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In Shaarli, they are used as a tinyurl-like link to individual entries.
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*/
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function smallHash($text)
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{
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$t = rtrim(base64_encode(hash('crc32',$text,true)),'=');
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$t = str_replace('+','-',$t); // Get rid of characters which need encoding in URLs.
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$t = str_replace('/','_',$t);
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$t = str_replace('=','@',$t);
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return $t;
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}
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// In a string, converts urls to clickable links.
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// Function inspired from http://www.php.net/manual/en/function.preg-replace.php#85722
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function text2clickable($url)
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{
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$redir = empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'];
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return preg_replace('!(((?:https?|ftp|file)://|apt:|magnet:)\S+[[:alnum:]]/?)!si','<a href="'.$redir.'$1" rel="nofollow">$1</a>',$url);
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}
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// This function inserts where relevant so that multiple spaces are properly displayed in HTML
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// even in the absence of <pre> (This is used in description to keep text formatting)
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function keepMultipleSpaces($text)
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{
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return str_replace(' ',' ',$text);
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}
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// ------------------------------------------------------------------------------------------
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// Sniff browser language to display dates in the right format automatically.
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// (Note that is may not work on your server if the corresponding local is not installed.)
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function autoLocale()
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{
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$loc='en_US'; // Default if browser does not send HTTP_ACCEPT_LANGUAGE
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if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) // eg. "fr,fr-fr;q=0.8,en;q=0.5,en-us;q=0.3"
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{ // (It's a bit crude, but it works very well. Prefered language is always presented first.)
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if (preg_match('/([a-z]{2}(-[a-z]{2})?)/i',$_SERVER['HTTP_ACCEPT_LANGUAGE'],$matches)) $loc=$matches[1];
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}
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setlocale(LC_TIME,$loc); // LC_TIME = Set local for date/time format only.
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}
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// ------------------------------------------------------------------------------------------
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// PubSubHubbub protocol support (if enabled) [UNTESTED]
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// (Source: http://aldarone.fr/les-flux-rss-shaarli-et-pubsubhubbub/ )
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if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) include './publisher.php';
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function pubsubhub()
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{
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if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
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{
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$p = new Publisher($GLOBALS['config']['PUBSUBHUB_URL']);
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$topic_url = array (
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indexUrl().'?do=atom',
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indexUrl().'?do=rss'
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);
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$p->publish_update($topic_url);
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}
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}
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// ------------------------------------------------------------------------------------------
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// Session management
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// Returns the IP address of the client (Used to prevent session cookie hijacking.)
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function allIPs()
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{
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$ip = $_SERVER["REMOTE_ADDR"];
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// Then we use more HTTP headers to prevent session hijacking from users behind the same proxy.
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if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ip=$ip.'_'.$_SERVER['HTTP_X_FORWARDED_FOR']; }
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if (isset($_SERVER['HTTP_CLIENT_IP'])) { $ip=$ip.'_'.$_SERVER['HTTP_CLIENT_IP']; }
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return $ip;
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}
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// Check that user/password is correct.
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function check_auth($login,$password)
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{
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$hash = sha1($password.$login.$GLOBALS['salt']);
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if ($login==$GLOBALS['login'] && $hash==$GLOBALS['hash'])
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{ // Login/password is correct.
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$_SESSION['uid'] = sha1(uniqid('',true).'_'.mt_rand()); // generate unique random number (different than phpsessionid)
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$_SESSION['ip']=allIPs(); // We store IP address(es) of the client to make sure session is not hijacked.
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$_SESSION['username']=$login;
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$_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Set session expiration.
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logm('Login successful');
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return True;
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}
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logm('Login failed for user '.$login);
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return False;
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}
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// Returns true if the user is logged in.
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function isLoggedIn()
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{
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if ($GLOBALS['config']['OPEN_SHAARLI']) return true;
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if (!isset($GLOBALS['login'])) return false; // Shaarli is not configured yet.
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// If session does not exist on server side, or IP address has changed, or session has expired, logout.
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if (empty($_SESSION['uid']) || ($GLOBALS['disablesessionprotection']==false && $_SESSION['ip']!=allIPs()) || time()>=$_SESSION['expires_on'])
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{
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logout();
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return false;
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}
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if (!empty($_SESSION['longlastingsession'])) $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // In case of "Stay signed in" checked.
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else $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Standard session expiration date.
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return true;
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}
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// Force logout.
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function logout() { if (isset($_SESSION)) { unset($_SESSION['uid']); unset($_SESSION['ip']); unset($_SESSION['username']);} }
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// ------------------------------------------------------------------------------------------
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// Brute force protection system
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// Several consecutive failed logins will ban the IP address for 30 minutes.
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if (!is_file($GLOBALS['config']['IPBANS_FILENAME'])) file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export(array('FAILURES'=>array(),'BANS'=>array()),true).";\n?>");
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include $GLOBALS['config']['IPBANS_FILENAME'];
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// Signal a failed login. Will ban the IP if too many failures:
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function ban_loginFailed()
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{
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$ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
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if (!isset($gb['FAILURES'][$ip])) $gb['FAILURES'][$ip]=0;
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$gb['FAILURES'][$ip]++;
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if ($gb['FAILURES'][$ip]>($GLOBALS['config']['BAN_AFTER']-1))
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{
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$gb['BANS'][$ip]=time()+$GLOBALS['config']['BAN_DURATION'];
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logm('IP address banned from login');
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}
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$GLOBALS['IPBANS'] = $gb;
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file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
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}
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// Signals a successful login. Resets failed login counter.
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function ban_loginOk()
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{
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$ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
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unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
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$GLOBALS['IPBANS'] = $gb;
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file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
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}
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// Checks if the user CAN login. If 'true', the user can try to login.
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function ban_canLogin()
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{
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$ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
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if (isset($gb['BANS'][$ip]))
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{
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// User is banned. Check if the ban has expired:
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if ($gb['BANS'][$ip]<=time())
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{ // Ban expired, user can try to login again.
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logm('Ban lifted.');
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unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
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file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
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return true; // Ban has expired, user can login.
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}
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return false; // User is banned.
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}
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return true; // User is not banned.
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}
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// ------------------------------------------------------------------------------------------
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// Process login form: Check if login/password is correct.
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if (isset($_POST['login']))
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{
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if (!ban_canLogin()) die('I said: NO. You are banned for the moment. Go away.');
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if (isset($_POST['password']) && tokenOk($_POST['token']) && (check_auth($_POST['login'], $_POST['password'])))
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{ // Login/password is ok.
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ban_loginOk();
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// If user wants to keep the session cookie even after the browser closes:
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if (!empty($_POST['longlastingsession']))
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{
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$_SESSION['longlastingsession']=31536000; // (31536000 seconds = 1 year)
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$_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // Set session expiration on server-side.
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$cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
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session_set_cookie_params($_SESSION['longlastingsession'],$cookiedir); // Set session cookie expiration on client side
|
|
// Note: Never forget the trailing slash on the cookie path !
|
|
session_regenerate_id(true); // Send cookie with new expiration date to browser.
|
|
}
|
|
else // Standard session expiration (=when browser closes)
|
|
{
|
|
$cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
|
|
session_set_cookie_params(0,$cookiedir); // 0 means "When browser closes"
|
|
session_regenerate_id(true);
|
|
}
|
|
// Optional redirect after login:
|
|
if (isset($_GET['post'])) { header('Location: ?post='.urlencode($_GET['post']).(!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').(!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')); exit; }
|
|
if (isset($_POST['returnurl']))
|
|
{
|
|
if (endsWith($_POST['returnurl'],'?do=login')) { header('Location: ?'); exit; } // Prevent loops over login screen.
|
|
header('Location: '.$_POST['returnurl']); exit;
|
|
}
|
|
header('Location: ?'); exit;
|
|
}
|
|
else
|
|
{
|
|
ban_loginFailed();
|
|
echo '<script language="JavaScript">alert("Wrong login/password.");document.location=\'?do=login\';</script>'; // Redirect to login screen.
|
|
exit;
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------
|
|
// Misc utility functions:
|
|
|
|
// Returns the server URL (including port and http/https), without path.
|
|
// eg. "http://myserver.com:8080"
|
|
// You can append $_SERVER['SCRIPT_NAME'] to get the current script URL.
|
|
function serverUrl()
|
|
{
|
|
$https = (!empty($_SERVER['HTTPS']) && (strtolower($_SERVER['HTTPS'])=='on')) || $_SERVER["SERVER_PORT"]=='443'; // HTTPS detection.
|
|
$serverport = ($_SERVER["SERVER_PORT"]=='80' || ($https && $_SERVER["SERVER_PORT"]=='443') ? '' : ':'.$_SERVER["SERVER_PORT"]);
|
|
return 'http'.($https?'s':'').'://'.$_SERVER["SERVER_NAME"].$serverport;
|
|
}
|
|
|
|
// Returns the absolute URL of current script, without the query.
|
|
// (eg. http://sebsauvage.net/links/)
|
|
function indexUrl()
|
|
{
|
|
$scriptname = $_SERVER["SCRIPT_NAME"];
|
|
// If the script is named 'index.php', we remove it (for better looking URLs,
|
|
// eg. http://mysite.com/shaarli/?abcde instead of http://mysite.com/shaarli/index.php?abcde)
|
|
if (endswith($scriptname,'index.php')) $scriptname = substr($scriptname,0,strlen($scriptname)-9);
|
|
return serverUrl() . $scriptname;
|
|
}
|
|
|
|
// Returns the absolute URL of current script, WITH the query.
|
|
// (eg. http://sebsauvage.net/links/?toto=titi&spamspamspam=humbug)
|
|
function pageUrl()
|
|
{
|
|
return indexUrl().(!empty($_SERVER["QUERY_STRING"]) ? '?'.$_SERVER["QUERY_STRING"] : '');
|
|
}
|
|
|
|
// Convert post_max_size/upload_max_filesize (eg.'16M') parameters to bytes.
|
|
function return_bytes($val)
|
|
{
|
|
$val = trim($val); $last=strtolower($val[strlen($val)-1]);
|
|
switch($last)
|
|
{
|
|
case 'g': $val *= 1024;
|
|
case 'm': $val *= 1024;
|
|
case 'k': $val *= 1024;
|
|
}
|
|
return $val;
|
|
}
|
|
|
|
// Try to determine max file size for uploads (POST).
|
|
// Returns an integer (in bytes)
|
|
function getMaxFileSize()
|
|
{
|
|
$size1 = return_bytes(ini_get('post_max_size'));
|
|
$size2 = return_bytes(ini_get('upload_max_filesize'));
|
|
// Return the smaller of two:
|
|
$maxsize = min($size1,$size2);
|
|
// FIXME: Then convert back to readable notations ? (eg. 2M instead of 2000000)
|
|
return $maxsize;
|
|
}
|
|
|
|
// Tells if a string start with a substring or not.
|
|
function startsWith($haystack,$needle,$case=true)
|
|
{
|
|
if($case){return (strcmp(substr($haystack, 0, strlen($needle)),$needle)===0);}
|
|
return (strcasecmp(substr($haystack, 0, strlen($needle)),$needle)===0);
|
|
}
|
|
|
|
// Tells if a string ends with a substring or not.
|
|
function endsWith($haystack,$needle,$case=true)
|
|
{
|
|
if($case){return (strcmp(substr($haystack, strlen($haystack) - strlen($needle)),$needle)===0);}
|
|
return (strcasecmp(substr($haystack, strlen($haystack) - strlen($needle)),$needle)===0);
|
|
}
|
|
|
|
/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a timestamp (Unix epoch)
|
|
(used to build the ADD_DATE attribute in Netscape-bookmarks file)
|
|
PS: I could have used strptime(), but it does not exist on Windows. I'm too kind. */
|
|
function linkdate2timestamp($linkdate)
|
|
{
|
|
$Y=$M=$D=$h=$m=$s=0;
|
|
$r = sscanf($linkdate,'%4d%2d%2d_%2d%2d%2d',$Y,$M,$D,$h,$m,$s);
|
|
return mktime($h,$m,$s,$M,$D,$Y);
|
|
}
|
|
|
|
/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a RFC822 date.
|
|
(used to build the pubDate attribute in RSS feed.) */
|
|
function linkdate2rfc822($linkdate)
|
|
{
|
|
return date('r',linkdate2timestamp($linkdate)); // 'r' is for RFC822 date format.
|
|
}
|
|
|
|
/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a ISO 8601 date.
|
|
(used to build the updated tags in ATOM feed.) */
|
|
function linkdate2iso8601($linkdate)
|
|
{
|
|
return date('c',linkdate2timestamp($linkdate)); // 'c' is for ISO 8601 date format.
|
|
}
|
|
|
|
/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a localized date format.
|
|
(used to display link date on screen)
|
|
The date format is automatically chosen according to locale/languages sniffed from browser headers (see autoLocale()). */
|
|
function linkdate2locale($linkdate)
|
|
{
|
|
return utf8_encode(strftime('%c',linkdate2timestamp($linkdate))); // %c is for automatic date format according to locale.
|
|
// Note that if you use a local which is not installed on your webserver,
|
|
// the date will not be displayed in the chosen locale, but probably in US notation.
|
|
}
|
|
|
|
// Parse HTTP response headers and return an associative array.
|
|
function http_parse_headers_shaarli( $headers )
|
|
{
|
|
$res=array();
|
|
foreach($headers as $header)
|
|
{
|
|
$i = strpos($header,': ');
|
|
if ($i!==false)
|
|
{
|
|
$key=substr($header,0,$i);
|
|
$value=substr($header,$i+2,strlen($header)-$i-2);
|
|
$res[$key]=$value;
|
|
}
|
|
}
|
|
return $res;
|
|
}
|
|
|
|
/* GET an URL.
|
|
Input: $url : url to get (http://...)
|
|
$timeout : Network timeout (will wait this many seconds for an anwser before giving up).
|
|
Output: An array. [0] = HTTP status message (eg. "HTTP/1.1 200 OK") or error message
|
|
[1] = associative array containing HTTP response headers (eg. echo getHTTP($url)[1]['Content-Type'])
|
|
[2] = data
|
|
Example: list($httpstatus,$headers,$data) = getHTTP('http://sebauvage.net/');
|
|
if (strpos($httpstatus,'200 OK')!==false)
|
|
echo 'Data type: '.htmlspecialchars($headers['Content-Type']);
|
|
else
|
|
echo 'There was an error: '.htmlspecialchars($httpstatus)
|
|
*/
|
|
function getHTTP($url,$timeout=30)
|
|
{
|
|
try
|
|
{
|
|
$options = array('http'=>array('method'=>'GET','timeout' => $timeout)); // Force network timeout
|
|
$context = stream_context_create($options);
|
|
$data=file_get_contents($url,false,$context,-1, 4000000); // We download at most 4 Mb from source.
|
|
if (!$data) { return array('HTTP Error',array(),''); }
|
|
$httpStatus=$http_response_header[0]; // eg. "HTTP/1.1 200 OK"
|
|
$responseHeaders=http_parse_headers_shaarli($http_response_header);
|
|
return array($httpStatus,$responseHeaders,$data);
|
|
}
|
|
catch (Exception $e) // getHTTP *can* fail silentely (we don't care if the title cannot be fetched)
|
|
{
|
|
return array($e->getMessage(),'','');
|
|
}
|
|
}
|
|
|
|
// Extract title from an HTML document.
|
|
// (Returns an empty string if not found.)
|
|
function html_extract_title($html)
|
|
{
|
|
return preg_match('!<title>(.*?)</title>!is', $html, $matches) ? trim(str_replace("\n",' ', $matches[1])) : '' ;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------
|
|
// Token management for XSRF protection
|
|
// Token should be used in any form which acts on data (create,update,delete,import...).
|
|
if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array(); // Token are attached to the session.
|
|
|
|
// Returns a token.
|
|
function getToken()
|
|
{
|
|
$rnd = sha1(uniqid('',true).'_'.mt_rand().$GLOBALS['salt']); // We generate a random string.
|
|
$_SESSION['tokens'][$rnd]=1; // Store it on the server side.
|
|
return $rnd;
|
|
}
|
|
|
|
// Tells if a token is ok. Using this function will destroy the token.
|
|
// true=token is ok.
|
|
function tokenOk($token)
|
|
{
|
|
if (isset($_SESSION['tokens'][$token]))
|
|
{
|
|
unset($_SESSION['tokens'][$token]); // Token is used: destroy it.
|
|
return true; // Token is ok.
|
|
}
|
|
return false; // Wrong token, or already used.
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------
|
|
/* This class is in charge of building the final page.
|
|
(This is basically a wrapper around RainTPL which pre-fills some fields.)
|
|
p = new pageBuilder;
|
|
p.assign('myfield','myvalue');
|
|
p.renderPage('mytemplate');
|
|
|
|
*/
|
|
class pageBuilder
|
|
{
|
|
private $tpl; // RainTPL template
|
|
|
|
function __construct()
|
|
{
|
|
$this->tpl=false;
|
|
}
|
|
|
|
private function initialize()
|
|
{
|
|
$this->tpl = new RainTPL;
|
|
$this->tpl->assign('newversion',checkUpdate());
|
|
$this->tpl->assign('feedurl',htmlspecialchars(indexUrl()));
|
|
$searchcrits=''; // Search criteria
|
|
if (!empty($_GET['searchtags'])) $searchcrits.='&searchtags='.urlencode($_GET['searchtags']);
|
|
elseif (!empty($_GET['searchterm'])) $searchcrits.='&searchterm='.urlencode($_GET['searchterm']);
|
|
$this->tpl->assign('searchcrits',$searchcrits);
|
|
$this->tpl->assign('source',indexUrl());
|
|
$this->tpl->assign('version',shaarli_version);
|
|
$this->tpl->assign('scripturl',indexUrl());
|
|
$this->tpl->assign('pagetitle','Shaarli');
|
|
$this->tpl->assign('privateonly',!empty($_SESSION['privateonly'])); // Show only private links ?
|
|
if (!empty($GLOBALS['title'])) $this->tpl->assign('pagetitle',$GLOBALS['title']);
|
|
if (!empty($GLOBALS['pagetitle'])) $this->tpl->assign('pagetitle',$GLOBALS['pagetitle']);
|
|
$this->tpl->assign('shaarlititle',empty($GLOBALS['title']) ? 'Shaarli': $GLOBALS['title'] );
|
|
return;
|
|
}
|
|
|
|
// The following assign() method is basically the same as RainTPL (except that it's lazy)
|
|
public function assign($what,$where)
|
|
{
|
|
if ($this->tpl===false) $this->initialize(); // Lazy initialization
|
|
$this->tpl->assign($what,$where);
|
|
}
|
|
|
|
// Render a specific page (using a template).
|
|
// eg. pb.renderPage('picwall')
|
|
public function renderPage($page)
|
|
{
|
|
if ($this->tpl===false) $this->initialize(); // Lazy initialization
|
|
$this->tpl->draw($page);
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------
|
|
/* Data storage for links.
|
|
This object behaves like an associative array.
|
|
Example:
|
|
$mylinks = new linkdb();
|
|
echo $mylinks['20110826_161819']['title'];
|
|
foreach($mylinks as $link)
|
|
echo $link['title'].' at url '.$link['url'].' ; description:'.$link['description'];
|
|
|
|
Available keys:
|
|
title : Title of the link
|
|
url : URL of the link. Can be absolute or relative. Relative URLs are permalinks (eg.'?m-ukcw')
|
|
description : description of the entry
|
|
private : Is this link private ? 0=no, other value=yes
|
|
linkdate : date of the creation of this entry, in the form YYYYMMDD_HHMMSS (eg.'20110914_192317')
|
|
tags : tags attached to this entry (separated by spaces)
|
|
|
|
We implement 3 interfaces:
|
|
- ArrayAccess so that this object behaves like an associative array.
|
|
- Iterator so that this object can be used in foreach() loops.
|
|
- Countable interface so that we can do a count() on this object.
|
|
*/
|
|
class linkdb implements Iterator, Countable, ArrayAccess
|
|
{
|
|
private $links; // List of links (associative array. Key=linkdate (eg. "20110823_124546"), value= associative array (keys:title,description...)
|
|
private $urls; // List of all recorded URLs (key=url, value=linkdate) for fast reserve search (url-->linkdate)
|
|
private $keys; // List of linkdate keys (for the Iterator interface implementation)
|
|
private $position; // Position in the $this->keys array. (for the Iterator interface implementation.)
|
|
private $loggedin; // Is the used logged in ? (used to filter private links)
|
|
|
|
// Constructor:
|
|
function __construct($isLoggedIn)
|
|
// Input : $isLoggedIn : is the used logged in ?
|
|
{
|
|
$this->loggedin = $isLoggedIn;
|
|
$this->checkdb(); // Make sure data file exists.
|
|
$this->readdb(); // Then read it.
|
|
}
|
|
|
|
// ---- Countable interface implementation
|
|
public function count() { return count($this->links); }
|
|
|
|
// ---- ArrayAccess interface implementation
|
|
public function offsetSet($offset, $value)
|
|
{
|
|
if (!$this->loggedin) die('You are not authorized to add a link.');
|
|
if (empty($value['linkdate']) || empty($value['url'])) die('Internal Error: A link should always have a linkdate and url.');
|
|
if (empty($offset)) die('You must specify a key.');
|
|
$this->links[$offset] = $value;
|
|
$this->urls[$value['url']]=$offset;
|
|
}
|
|
public function offsetExists($offset) { return array_key_exists($offset,$this->links); }
|
|
public function offsetUnset($offset)
|
|
{
|
|
if (!$this->loggedin) die('You are not authorized to delete a link.');
|
|
$url = $this->links[$offset]['url']; unset($this->urls[$url]);
|
|
unset($this->links[$offset]);
|
|
}
|
|
public function offsetGet($offset) { return isset($this->links[$offset]) ? $this->links[$offset] : null; }
|
|
|
|
// ---- Iterator interface implementation
|
|
function rewind() { $this->keys=array_keys($this->links); rsort($this->keys); $this->position=0; } // Start over for iteration, ordered by date (latest first).
|
|
function key() { return $this->keys[$this->position]; } // current key
|
|
function current() { return $this->links[$this->keys[$this->position]]; } // current value
|
|
function next() { ++$this->position; } // go to next item
|
|
function valid() { return isset($this->keys[$this->position]); } // Check if current position is valid.
|
|
|
|
// ---- Misc methods
|
|
private function checkdb() // Check if db directory and file exists.
|
|
{
|
|
if (!file_exists($GLOBALS['config']['DATASTORE'])) // Create a dummy database for example.
|
|
{
|
|
$this->links = array();
|
|
$link = array('title'=>'Shaarli - sebsauvage.net','url'=>'http://sebsauvage.net/wiki/doku.php?id=php:shaarli','description'=>'Welcome to Shaarli ! This is a bookmark. To edit or delete me, you must first login.','private'=>0,'linkdate'=>'20110914_190000','tags'=>'opensource software');
|
|
$this->links[$link['linkdate']] = $link;
|
|
$link = array('title'=>'My secret stuff... - Pastebin.com','url'=>'http://pastebin.com/smCEEeSn','description'=>'SShhhh!! I\'m a private link only YOU can see. You can delete me too.','private'=>1,'linkdate'=>'20110914_074522','tags'=>'secretstuff');
|
|
$this->links[$link['linkdate']] = $link;
|
|
file_put_contents($GLOBALS['config']['DATASTORE'], PHPPREFIX.base64_encode(gzdeflate(serialize($this->links))).PHPSUFFIX); // Write database to disk
|
|
}
|
|
}
|
|
|
|
// Read database from disk to memory
|
|
private function readdb()
|
|
{
|
|
// Read data
|
|
$this->links=(file_exists($GLOBALS['config']['DATASTORE']) ? unserialize(gzinflate(base64_decode(substr(file_get_contents($GLOBALS['config']['DATASTORE']),strlen(PHPPREFIX),-strlen(PHPSUFFIX))))) : array() );
|
|
// Note that gzinflate is faster than gzuncompress. See: http://www.php.net/manual/en/function.gzdeflate.php#96439
|
|
|
|
// If user is not logged in, filter private links.
|
|
if (!$this->loggedin)
|
|
{
|
|
$toremove=array();
|
|
foreach($this->links as $link) { if ($link['private']!=0) $toremove[]=$link['linkdate']; }
|
|
foreach($toremove as $linkdate) { unset($this->links[$linkdate]); }
|
|
}
|
|
|
|
// Keep the list of the mapping URLs-->linkdate up-to-date.
|
|
$this->urls=array();
|
|
foreach($this->links as $link) { $this->urls[$link['url']]=$link['linkdate']; }
|
|
}
|
|
|
|
// Save database from memory to disk.
|
|
public function savedb()
|
|
{
|
|
if (!$this->loggedin) die('You are not authorized to change the database.');
|
|
file_put_contents($GLOBALS['config']['DATASTORE'], PHPPREFIX.base64_encode(gzdeflate(serialize($this->links))).PHPSUFFIX);
|
|
invalidateCaches();
|
|
}
|
|
|
|
// Returns the link for a given URL (if it exists). false it does not exist.
|
|
public function getLinkFromUrl($url)
|
|
{
|
|
if (isset($this->urls[$url])) return $this->links[$this->urls[$url]];
|
|
return false;
|
|
}
|
|
|
|
// Case insentitive search among links (in url, title and description). Returns filtered list of links.
|
|
// eg. print_r($mydb->filterFulltext('hollandais'));
|
|
public function filterFulltext($searchterms)
|
|
{
|
|
// FIXME: explode(' ',$searchterms) and perform a AND search.
|
|
// FIXME: accept double-quotes to search for a string "as is" ?
|
|
$filtered=array();
|
|
$s = strtolower($searchterms);
|
|
foreach($this->links as $l)
|
|
{
|
|
$found= (strpos(strtolower($l['title']),$s)!==false)
|
|
|| (strpos(strtolower($l['description']),$s)!==false)
|
|
|| (strpos(strtolower($l['url']),$s)!==false)
|
|
|| (strpos(strtolower($l['tags']),$s)!==false);
|
|
if ($found) $filtered[$l['linkdate']] = $l;
|
|
}
|
|
krsort($filtered);
|
|
return $filtered;
|
|
}
|
|
|
|
// Filter by tag.
|
|
// You can specify one or more tags (tags can be separated by space or comma).
|
|
// eg. print_r($mydb->filterTags('linux programming'));
|
|
public function filterTags($tags,$casesensitive=false)
|
|
{
|
|
$t = str_replace(',',' ',($casesensitive?$tags:strtolower($tags)));
|
|
$searchtags=explode(' ',$t);
|
|
$filtered=array();
|
|
foreach($this->links as $l)
|
|
{
|
|
$linktags = explode(' ',($casesensitive?$l['tags']:strtolower($l['tags'])));
|
|
if (count(array_intersect($linktags,$searchtags)) == count($searchtags))
|
|
$filtered[$l['linkdate']] = $l;
|
|
}
|
|
krsort($filtered);
|
|
return $filtered;
|
|
}
|
|
|
|
// Filter by day. Day must be in the form 'YYYYMMDD' (eg. '20120125')
|
|
// Sort order is: older articles first.
|
|
// eg. print_r($mydb->filterDay('20120125'));
|
|
public function filterDay($day)
|
|
{
|
|
$filtered=array();
|
|
foreach($this->links as $l)
|
|
{
|
|
if (startsWith($l['linkdate'],$day)) $filtered[$l['linkdate']] = $l;
|
|
}
|
|
ksort($filtered);
|
|
return $filtered;
|
|
}
|
|
// Filter by smallHash.
|
|
// Only 1 article is returned.
|
|
public function filterSmallHash($smallHash)
|
|
{
|
|
$filtered=array();
|
|
foreach($this->links as $l)
|
|
{
|
|
if ($smallHash==smallHash($l['linkdate'])) // Yes, this is ugly and slow
|
|
{
|
|
$filtered[$l['linkdate']] = $l;
|
|
return $filtered;
|
|
}
|
|
}
|
|
return $filtered;
|
|
}
|
|
|
|
// Returns the list of all tags
|
|
// Output: associative array key=tags, value=0
|
|
public function allTags()
|
|
{
|
|
$tags=array();
|
|
foreach($this->links as $link)
|
|
foreach(explode(' ',$link['tags']) as $tag)
|
|
if (!empty($tag)) $tags[$tag]=(empty($tags[$tag]) ? 1 : $tags[$tag]+1);
|
|
arsort($tags); // Sort tags by usage (most used tag first)
|
|
return $tags;
|
|
}
|
|
|
|
// Returns the list of days containing articles (oldest first)
|
|
// Output: An array containing days (in format YYYYMMDD).
|
|
public function days()
|
|
{
|
|
$linkdays=array();
|
|
foreach(array_keys($this->links) as $day)
|
|
{
|
|
$linkdays[substr($day,0,8)]=0;
|
|
}
|
|
$linkdays=array_keys($linkdays);
|
|
sort($linkdays);
|
|
return $linkdays;
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------
|
|
// Ouput the last 50 links in RSS 2.0 format.
|
|
function showRSS()
|
|
{
|
|
header('Content-Type: application/rss+xml; charset=utf-8');
|
|
|
|
// $usepermalink : If true, use permalink instead of final link.
|
|
// User just has to add 'permalink' in URL parameters. eg. http://mysite.com/shaarli/?do=rss&permalinks
|
|
$usepermalinks = isset($_GET['permalinks']);
|
|
|
|
// Cache system
|
|
$query = $_SERVER["QUERY_STRING"];
|
|
$cache = new pageCache(pageUrl(),startsWith($query,'do=rss') && !isLoggedIn());
|
|
$cached = $cache->cachedVersion(); if (!empty($cached)) { echo $cached; exit; }
|
|
|
|
// If cached was not found (or not usable), then read the database and build the response:
|
|
$LINKSDB=new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
|
|
|
|
// Optionnaly filter the results:
|
|
$linksToDisplay=array();
|
|
if (!empty($_GET['searchterm'])) $linksToDisplay = $LINKSDB->filterFulltext($_GET['searchterm']);
|
|
elseif (!empty($_GET['searchtags'])) $linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
|
|
else $linksToDisplay = $LINKSDB;
|
|
|
|
$pageaddr=htmlspecialchars(indexUrl());
|
|
echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">';
|
|
echo '<channel><title>'.htmlspecialchars($GLOBALS['title']).'</title><link>'.$pageaddr.'</link>';
|
|
echo '<description>Shared links</description><language>en-en</language><copyright>'.$pageaddr.'</copyright>'."\n\n";
|
|
if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
|
|
{
|
|
echo '<!-- PubSubHubbub Discovery -->';
|
|
echo '<link rel="hub" href="'.htmlspecialchars($GLOBALS['config']['PUBSUBHUB_URL']).'" xmlns="http://www.w3.org/2005/Atom" />';
|
|
echo '<link rel="self" href="'.htmlspecialchars($pageaddr).'?do=rss" xmlns="http://www.w3.org/2005/Atom" />';
|
|
echo '<!-- End Of PubSubHubbub Discovery -->';
|
|
}
|
|
$i=0;
|
|
$keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
|
|
while ($i<50 && $i<count($keys))
|
|
{
|
|
$link = $linksToDisplay[$keys[$i]];
|
|
$guid = $pageaddr.'?'.smallHash($link['linkdate']);
|
|
$rfc822date = linkdate2rfc822($link['linkdate']);
|
|
$absurl = htmlspecialchars($link['url']);
|
|
if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
|
|
if ($usepermalinks===true)
|
|
echo '<item><title>'.htmlspecialchars($link['title']).'</title><guid>'.$guid.'</guid><link>'.$guid.'</link>';
|
|
else
|
|
echo '<item><title>'.htmlspecialchars($link['title']).'</title><guid>'.$guid.'</guid><link>'.$absurl.'</link>';
|
|
if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) echo '<pubDate>'.htmlspecialchars($rfc822date)."</pubDate>\n";
|
|
if ($link['tags']!='') // Adding tags to each RSS entry (as mentioned in RSS specification)
|
|
{
|
|
foreach(explode(' ',$link['tags']) as $tag) { echo '<category domain="'.htmlspecialchars($pageaddr).'">'.htmlspecialchars($tag).'</category>'."\n"; }
|
|
}
|
|
|
|
// Add permalink in description
|
|
$descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
|
|
// If user wants permalinks first, put the final link in description
|
|
if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
|
|
if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
|
|
echo '<description><![CDATA['.nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description'])))).$descriptionlink.']]></description>'."\n</item>\n";
|
|
$i++;
|
|
}
|
|
echo '</channel></rss>';
|
|
|
|
$cache->cache(ob_get_contents());
|
|
ob_end_flush();
|
|
exit;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------
|
|
// Ouput the last 50 links in ATOM format.
|
|
function showATOM()
|
|
{
|
|
header('Content-Type: application/atom+xml; charset=utf-8');
|
|
|
|
// $usepermalink : If true, use permalink instead of final link.
|
|
// User just has to add 'permalink' in URL parameters. eg. http://mysite.com/shaarli/?do=atom&permalinks
|
|
$usepermalinks = isset($_GET['permalinks']);
|
|
|
|
// Cache system
|
|
$query = $_SERVER["QUERY_STRING"];
|
|
$cache = new pageCache(pageUrl(),startsWith($query,'do=atom') && !isLoggedIn());
|
|
$cached = $cache->cachedVersion(); if (!empty($cached)) { echo $cached; exit; }
|
|
// If cached was not found (or not usable), then read the database and build the response:
|
|
|
|
$LINKSDB=new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
|
|
|
|
|
|
// Optionnaly filter the results:
|
|
$linksToDisplay=array();
|
|
if (!empty($_GET['searchterm'])) $linksToDisplay = $LINKSDB->filterFulltext($_GET['searchterm']);
|
|
elseif (!empty($_GET['searchtags'])) $linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
|
|
else $linksToDisplay = $LINKSDB;
|
|
|
|
$pageaddr=htmlspecialchars(indexUrl());
|
|
$latestDate = '';
|
|
$entries='';
|
|
$i=0;
|
|
$keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
|
|
while ($i<50 && $i<count($keys))
|
|
{
|
|
$link = $linksToDisplay[$keys[$i]];
|
|
$guid = $pageaddr.'?'.smallHash($link['linkdate']);
|
|
$iso8601date = linkdate2iso8601($link['linkdate']);
|
|
$latestDate = max($latestDate,$iso8601date);
|
|
$absurl = htmlspecialchars($link['url']);
|
|
if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
|
|
$entries.='<entry><title>'.htmlspecialchars($link['title']).'</title>';
|
|
if ($usepermalinks===true)
|
|
$entries.='<link href="'.$guid.'" /><id>'.$guid.'</id>';
|
|
else
|
|
$entries.='<link href="'.$absurl.'" /><id>'.$guid.'</id>';
|
|
if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $entries.='<updated>'.htmlspecialchars($iso8601date).'</updated>';
|
|
|
|
// Add permalink in description
|
|
$descriptionlink = htmlspecialchars('(<a href="'.$guid.'">Permalink</a>)');
|
|
// If user wants permalinks first, put the final link in description
|
|
if ($usepermalinks===true) $descriptionlink = htmlspecialchars('(<a href="'.$absurl.'">Link</a>)');
|
|
if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
|
|
|
|
$entries.='<content type="html">'.htmlspecialchars(nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description']))))).$descriptionlink."</content>\n";
|
|
if ($link['tags']!='') // Adding tags to each ATOM entry (as mentioned in ATOM specification)
|
|
{
|
|
foreach(explode(' ',$link['tags']) as $tag)
|
|
{ $entries.='<category scheme="'.htmlspecialchars($pageaddr,ENT_QUOTES).'" term="'.htmlspecialchars($tag,ENT_QUOTES).'" />'."\n"; }
|
|
}
|
|
$entries.="</entry>\n";
|
|
$i++;
|
|
}
|
|
$feed='<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">';
|
|
$feed.='<title>'.htmlspecialchars($GLOBALS['title']).'</title>';
|
|
if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $feed.='<updated>'.htmlspecialchars($latestDate).'</updated>';
|
|
$feed.='<link rel="self" href="'.htmlspecialchars(serverUrl().$_SERVER["REQUEST_URI"]).'" />';
|
|
if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
|
|
{
|
|
$feed.='<!-- PubSubHubbub Discovery -->';
|
|
$feed.='<link rel="hub" href="'.htmlspecialchars($GLOBALS['config']['PUBSUBHUB_URL']).'" />';
|
|
$feed.='<!-- End Of PubSubHubbub Discovery -->';
|
|
}
|
|
$feed.='<author><name>'.htmlspecialchars($pageaddr).'</name><uri>'.htmlspecialchars($pageaddr).'</uri></author>';
|
|
$feed.='<id>'.htmlspecialchars($pageaddr).'</id>'."\n\n"; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
|
|
$feed.=$entries;
|
|
$feed.='</feed>';
|
|
echo $feed;
|
|
|
|
$cache->cache(ob_get_contents());
|
|
ob_end_flush();
|
|
exit;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------
|
|
// Daily RSS feed: 1 RSS entry per day giving all the links on that day.
|
|
// Gives the last 7 days (which have links).
|
|
// This RSS feed cannot be filtered.
|
|
function showDailyRSS()
|
|
{
|
|
// Cache system
|
|
$query = $_SERVER["QUERY_STRING"];
|
|
$cache = new pageCache(pageUrl(),startsWith($query,'do=dailyrss') && !isLoggedIn());
|
|
$cached = $cache->cachedVersion(); if (!empty($cached)) { echo $cached; exit; }
|
|
// If cached was not found (or not usable), then read the database and build the response:
|
|
$LINKSDB=new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
|
|
|
|
/* Some Shaarlies may have very few links, so we need to look
|
|
back in time (rsort()) until we have enough days ($nb_of_days).
|
|
*/
|
|
$linkdates=array(); foreach($LINKSDB as $linkdate=>$value) { $linkdates[]=$linkdate; }
|
|
rsort($linkdates);
|
|
$nb_of_days=7; // We take 7 days.
|
|
$today=Date('Ymd');
|
|
$days=array();
|
|
foreach($linkdates as $linkdate)
|
|
{
|
|
$day=substr($linkdate,0,8); // Extract day (without time)
|
|
if (strcmp($day,$today)<0)
|
|
{
|
|
if (empty($days[$day])) $days[$day]=array();
|
|
$days[$day][]=$linkdate;
|
|
}
|
|
if (count($days)>$nb_of_days) break; // Have we collected enough days ?
|
|
}
|
|
|
|
// Build the RSS feed.
|
|
header('Content-Type: application/rss+xml; charset=utf-8');
|
|
$pageaddr=htmlspecialchars(indexUrl());
|
|
echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
|
|
echo '<channel><title>Daily - '.htmlspecialchars($GLOBALS['title']).'</title><link>'.$pageaddr.'</link>';
|
|
echo '<description>Daily shared links</description><language>en-en</language><copyright>'.$pageaddr.'</copyright>'."\n";
|
|
|
|
foreach($days as $day=>$linkdates) // For each day.
|
|
{
|
|
$daydate = utf8_encode(strftime('%A %d, %B %Y',linkdate2timestamp($day.'_000000'))); // Full text date
|
|
$rfc822date = linkdate2rfc822($day.'_000000');
|
|
$absurl=htmlspecialchars(indexUrl().'?do=daily&day='.$day); // Absolute URL of the corresponding "Daily" page.
|
|
echo '<item><title>'.htmlspecialchars($GLOBALS['title'].' - '.$daydate).'</title><guid>'.$absurl.'</guid><link>'.$absurl.'</link>';
|
|
echo '<pubDate>'.htmlspecialchars($rfc822date)."</pubDate>";
|
|
|
|
// Build the HTML body of this RSS entry.
|
|
$html='';
|
|
$href='';
|
|
$links=array();
|
|
// We pre-format some fields for proper output.
|
|
foreach($linkdates as $linkdate)
|
|
{
|
|
$l = $LINKSDB[$linkdate];
|
|
$l['formatedDescription']=nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($l['description']))));
|
|
$l['thumbnail'] = thumbnail($l['url']);
|
|
$l['localdate']=linkdate2locale($l['linkdate']);
|
|
if (startsWith($l['url'],'?')) $l['url']=indexUrl().$l['url']; // make permalink URL absolute
|
|
$links[$linkdate]=$l;
|
|
}
|
|
// Then build the HTML for this day:
|
|
$tpl = new RainTPL;
|
|
$tpl->assign('links',$links);
|
|
$html = $tpl->draw('dailyrss',$return_string=true);
|
|
echo "\n";
|
|
echo '<description><![CDATA['.$html.']]></description>'."\n</item>\n\n";
|
|
|
|
}
|
|
echo '</channel></rss>';
|
|
|
|
$cache->cache(ob_get_contents());
|
|
ob_end_flush();
|
|
exit;
|
|
}
|
|
|
|
// "Daily" page.
|
|
function showDaily()
|
|
{
|
|
$LINKSDB=new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
|
|
|
|
|
|
$day=Date('Ymd',strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
|
|
if (isset($_GET['day'])) $day=$_GET['day'];
|
|
|
|
$days = $LINKSDB->days();
|
|
$i = array_search($day,$days);
|
|
if ($i==false) { $i=count($days)-1; $day=$days[$i]; }
|
|
$previousday='';
|
|
$nextday='';
|
|
if ($i!==false)
|
|
{
|
|
if ($i>1) $previousday=$days[$i-1];
|
|
if ($i<count($days)-1) $nextday=$days[$i+1];
|
|
}
|
|
|
|
$linksToDisplay=$LINKSDB->filterDay($day);
|
|
// We pre-format some fields for proper output.
|
|
foreach($linksToDisplay as $key=>$link)
|
|
{
|
|
$linksToDisplay[$key]['taglist']=explode(' ',$link['tags']);
|
|
$linksToDisplay[$key]['formatedDescription']=nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description']))));
|
|
$linksToDisplay[$key]['thumbnail'] = thumbnail($link['url']);
|
|
}
|
|
|
|
/* We need to spread the articles on 3 columns.
|
|
I did not want to use a javascript lib like http://masonry.desandro.com/
|
|
so I manually spread entries with a simple method: I roughly evaluate the
|
|
height of a div according to title and description length.
|
|
*/
|
|
$columns=array(array(),array(),array()); // Entries to display, for each column.
|
|
$fill=array(0,0,0); // Rough estimate of columns fill.
|
|
foreach($linksToDisplay as $key=>$link)
|
|
{
|
|
// Roughly estimate length of entry (by counting characters)
|
|
// Title: 30 chars = 1 line. 1 line is 30 pixels height.
|
|
// Description: 836 characters gives roughly 342 pixel height.
|
|
// This is not perfect, but it's usually ok.
|
|
$length=strlen($link['title'])+(342*strlen($link['description']))/836;
|
|
if ($link['thumbnail']) $length +=100; // 1 thumbnails roughly takes 100 pixels height.
|
|
// Then put in column which is the less filled:
|
|
$smallest=min($fill); // find smallest value in array.
|
|
$index=array_search($smallest,$fill); // find index of this smallest value.
|
|
array_push($columns[$index],$link); // Put entry in this column.
|
|
$fill[$index]+=$length;
|
|
}
|
|
$PAGE = new pageBuilder;
|
|
$PAGE->assign('linksToDisplay',$linksToDisplay);
|
|
$PAGE->assign('linkcount',count($LINKSDB));
|
|
$PAGE->assign('col1',$columns[0]);
|
|
$PAGE->assign('col1',$columns[0]);
|
|
$PAGE->assign('col2',$columns[1]);
|
|
$PAGE->assign('col3',$columns[2]);
|
|
$PAGE->assign('day',utf8_encode(strftime('%A %d, %B %Y',linkdate2timestamp($day.'_000000'))));
|
|
$PAGE->assign('previousday',$previousday);
|
|
$PAGE->assign('nextday',$nextday);
|
|
$PAGE->renderPage('daily');
|
|
exit;
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------------------------------
|
|
// Render HTML page (according to URL parameters and user rights)
|
|
function renderPage()
|
|
{
|
|
$LINKSDB=new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
|
|
|
|
// -------- Display login form.
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=login'))
|
|
{
|
|
if ($GLOBALS['config']['OPEN_SHAARLI']) { header('Location: ?'); exit; } // No need to login for open Shaarli
|
|
$token=''; if (ban_canLogin()) $token=getToken(); // Do not waste token generation if not useful.
|
|
$PAGE = new pageBuilder;
|
|
$PAGE->assign('token',$token);
|
|
$PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER']:''));
|
|
$PAGE->renderPage('loginform');
|
|
exit;
|
|
}
|
|
// -------- User wants to logout.
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=logout'))
|
|
{
|
|
invalidateCaches();
|
|
logout();
|
|
header('Location: ?');
|
|
exit;
|
|
}
|
|
|
|
// -------- Picture wall
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=picwall'))
|
|
{
|
|
// Optionnaly filter the results:
|
|
$links=array();
|
|
if (!empty($_GET['searchterm'])) $links = $LINKSDB->filterFulltext($_GET['searchterm']);
|
|
elseif (!empty($_GET['searchtags'])) $links = $LINKSDB->filterTags(trim($_GET['searchtags']));
|
|
else $links = $LINKSDB;
|
|
$body='';
|
|
$linksToDisplay=array();
|
|
|
|
// Get only links which have a thumbnail.
|
|
foreach($links as $link)
|
|
{
|
|
$permalink='?'.htmlspecialchars(smallhash($link['linkdate']),ENT_QUOTES);
|
|
$thumb=lazyThumbnail($link['url'],$permalink);
|
|
if ($thumb!='') // Only output links which have a thumbnail.
|
|
{
|
|
$link['thumbnail']=$thumb; // Thumbnail HTML code.
|
|
$link['permalink']=$permalink;
|
|
$linksToDisplay[]=$link; // Add to array.
|
|
}
|
|
}
|
|
$PAGE = new pageBuilder;
|
|
$PAGE->assign('linkcount',count($LINKSDB));
|
|
$PAGE->assign('linksToDisplay',$linksToDisplay);
|
|
$PAGE->renderPage('picwall');
|
|
exit;
|
|
}
|
|
|
|
// -------- Tag cloud
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=tagcloud'))
|
|
{
|
|
$tags= $LINKSDB->allTags();
|
|
// We sort tags alphabetically, then choose a font size according to count.
|
|
// First, find max value.
|
|
$maxcount=0; foreach($tags as $key=>$value) $maxcount=max($maxcount,$value);
|
|
ksort($tags);
|
|
$tagList=array();
|
|
foreach($tags as $key=>$value)
|
|
{
|
|
$tagList[$key] = array('count'=>$value,'size'=>max(40*$value/$maxcount,8));
|
|
}
|
|
$PAGE = new pageBuilder;
|
|
$PAGE->assign('linkcount',count($LINKSDB));
|
|
$PAGE->assign('tags',$tagList);
|
|
$PAGE->renderPage('tagcloud');
|
|
exit;
|
|
}
|
|
|
|
// -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
|
|
if (isset($_GET['addtag']))
|
|
{
|
|
// Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
|
|
if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER
|
|
parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
|
|
$params['searchtags'] = (empty($params['searchtags']) ? trim($_GET['addtag']) : trim($params['searchtags']).' '.trim($_GET['addtag']));
|
|
unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
|
|
header('Location: ?'.http_build_query($params));
|
|
exit;
|
|
}
|
|
|
|
// -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
|
|
if (isset($_GET['removetag']))
|
|
{
|
|
// Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
|
|
if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?'); exit; } // In case browser does not send HTTP_REFERER
|
|
parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
|
|
if (isset($params['searchtags']))
|
|
{
|
|
$tags = explode(' ',$params['searchtags']);
|
|
$tags=array_diff($tags, array($_GET['removetag'])); // Remove value from array $tags.
|
|
if (count($tags)==0) unset($params['searchtags']); else $params['searchtags'] = implode(' ',$tags);
|
|
unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
|
|
}
|
|
header('Location: ?'.http_build_query($params));
|
|
exit;
|
|
}
|
|
|
|
// -------- User wants to change the number of links per page (linksperpage=...)
|
|
if (isset($_GET['linksperpage']))
|
|
{
|
|
if (is_numeric($_GET['linksperpage'])) { $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage'])); }
|
|
header('Location: '.(empty($_SERVER['HTTP_REFERER'])?'?':$_SERVER['HTTP_REFERER']));
|
|
exit;
|
|
}
|
|
|
|
// -------- User wants to see only private links (toggle)
|
|
if (isset($_GET['privateonly']))
|
|
{
|
|
if (empty($_SESSION['privateonly']))
|
|
{
|
|
$_SESSION['privateonly']=1; // See only private links
|
|
}
|
|
else
|
|
{
|
|
unset($_SESSION['privateonly']); // See all links
|
|
}
|
|
header('Location: '.(empty($_SERVER['HTTP_REFERER'])?'?':$_SERVER['HTTP_REFERER']));
|
|
exit;
|
|
}
|
|
|
|
// -------- Handle other actions allowed for non-logged in users:
|
|
if (!isLoggedIn())
|
|
{
|
|
// User tries to post new link but is not loggedin:
|
|
// Show login screen, then redirect to ?post=...
|
|
if (isset($_GET['post']))
|
|
{
|
|
header('Location: ?do=login&post='.urlencode($_GET['post']).(!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').(!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')); // Redirect to login page, then back to post link.
|
|
exit;
|
|
}
|
|
$PAGE = new pageBuilder;
|
|
buildLinkList($PAGE,$LINKSDB); // Compute list of links to display
|
|
$PAGE->renderPage('linklist');
|
|
exit; // Never remove this one ! All operations below are reserved for logged in user.
|
|
}
|
|
|
|
// -------- All other functions are reserved for the registered user:
|
|
|
|
// -------- Display the Tools menu if requested (import/export/bookmarklet...)
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=tools'))
|
|
{
|
|
$PAGE = new pageBuilder;
|
|
$PAGE->assign('linkcount',count($LINKSDB));
|
|
$PAGE->assign('pageabsaddr',indexUrl());
|
|
$PAGE->renderPage('tools');
|
|
exit;
|
|
}
|
|
|
|
// -------- User wants to change his/her password.
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=changepasswd'))
|
|
{
|
|
if ($GLOBALS['config']['OPEN_SHAARLI']) die('You are not supposed to change a password on an Open Shaarli.');
|
|
if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword']))
|
|
{
|
|
if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away !
|
|
|
|
// Make sure old password is correct.
|
|
$oldhash = sha1($_POST['oldpassword'].$GLOBALS['login'].$GLOBALS['salt']);
|
|
if ($oldhash!=$GLOBALS['hash']) { echo '<script language="JavaScript">alert("The old password is not correct.");document.location=\'?do=changepasswd\';</script>'; exit; }
|
|
// Save new password
|
|
$GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
|
|
$GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
|
|
writeConfig();
|
|
echo '<script language="JavaScript">alert("Your password has been changed.");document.location=\'?do=tools\';</script>';
|
|
exit;
|
|
}
|
|
else // show the change password form.
|
|
{
|
|
$PAGE = new pageBuilder;
|
|
$PAGE->assign('linkcount',count($LINKSDB));
|
|
$PAGE->assign('token',getToken());
|
|
$PAGE->renderPage('changepassword');
|
|
exit;
|
|
}
|
|
}
|
|
|
|
// -------- User wants to change configuration
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=configure'))
|
|
{
|
|
if (!empty($_POST['title']) )
|
|
{
|
|
if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away !
|
|
$tz = 'UTC';
|
|
if (!empty($_POST['continent']) && !empty($_POST['city']))
|
|
if (isTZvalid($_POST['continent'],$_POST['city']))
|
|
$tz = $_POST['continent'].'/'.$_POST['city'];
|
|
$GLOBALS['timezone'] = $tz;
|
|
$GLOBALS['title']=$_POST['title'];
|
|
$GLOBALS['redirector']=$_POST['redirector'];
|
|
$GLOBALS['disablesessionprotection']=!empty($_POST['disablesessionprotection']);
|
|
writeConfig();
|
|
echo '<script language="JavaScript">alert("Configuration was saved.");document.location=\'?do=tools\';</script>';
|
|
exit;
|
|
}
|
|
else // Show the configuration form.
|
|
{
|
|
$PAGE = new pageBuilder;
|
|
$PAGE->assign('linkcount',count($LINKSDB));
|
|
$PAGE->assign('token',getToken());
|
|
$PAGE->assign('title',htmlspecialchars( empty($GLOBALS['title']) ? '' : $GLOBALS['title'] , ENT_QUOTES));
|
|
$PAGE->assign('redirector',htmlspecialchars( empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'] , ENT_QUOTES));
|
|
list($timezone_form,$timezone_js) = templateTZform($GLOBALS['timezone']);
|
|
$PAGE->assign('timezone_form',$timezone_form); // FIXME: put entire tz form generation in template ?
|
|
$PAGE->assign('timezone_js',$timezone_js);
|
|
$PAGE->renderPage('configure');
|
|
exit;
|
|
}
|
|
}
|
|
|
|
// -------- User wants to rename a tag or delete it
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=changetag'))
|
|
{
|
|
if (empty($_POST['fromtag']))
|
|
{
|
|
$PAGE = new pageBuilder;
|
|
$PAGE->assign('linkcount',count($LINKSDB));
|
|
$PAGE->assign('token',getToken());
|
|
$PAGE->renderPage('changetag');
|
|
exit;
|
|
}
|
|
if (!tokenOk($_POST['token'])) die('Wrong token.');
|
|
|
|
// Delete a tag:
|
|
if (!empty($_POST['deletetag']) && !empty($_POST['fromtag']))
|
|
{
|
|
$needle=trim($_POST['fromtag']);
|
|
$linksToAlter = $LINKSDB->filterTags($needle,true); // true for case-sensitive tag search.
|
|
foreach($linksToAlter as $key=>$value)
|
|
{
|
|
$tags = explode(' ',trim($value['tags']));
|
|
unset($tags[array_search($needle,$tags)]); // Remove tag.
|
|
$value['tags']=trim(implode(' ',$tags));
|
|
$LINKSDB[$key]=$value;
|
|
}
|
|
$LINKSDB->savedb(); // save to disk
|
|
echo '<script language="JavaScript">alert("Tag was removed from '.count($linksToAlter).' links.");document.location=\'?\';</script>';
|
|
exit;
|
|
}
|
|
|
|
// Rename a tag:
|
|
if (!empty($_POST['renametag']) && !empty($_POST['fromtag']) && !empty($_POST['totag']))
|
|
{
|
|
$needle=trim($_POST['fromtag']);
|
|
$linksToAlter = $LINKSDB->filterTags($needle,true); // true for case-sensitive tag search.
|
|
foreach($linksToAlter as $key=>$value)
|
|
{
|
|
$tags = explode(' ',trim($value['tags']));
|
|
$tags[array_search($needle,$tags)] = trim($_POST['totag']); // Remplace tags value.
|
|
$value['tags']=trim(implode(' ',$tags));
|
|
$LINKSDB[$key]=$value;
|
|
}
|
|
$LINKSDB->savedb(); // save to disk
|
|
echo '<script language="JavaScript">alert("Tag was renamed in '.count($linksToAlter).' links.");document.location=\'?searchtags='.urlencode($_POST['totag']).'\';</script>';
|
|
exit;
|
|
}
|
|
}
|
|
|
|
// -------- User wants to add a link without using the bookmarklet: show form.
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=addlink'))
|
|
{
|
|
$PAGE = new pageBuilder;
|
|
$PAGE->assign('linkcount',count($LINKSDB));
|
|
$PAGE->renderPage('addlink');
|
|
exit;
|
|
}
|
|
|
|
// -------- User clicked the "Save" button when editing a link: Save link to database.
|
|
if (isset($_POST['save_edit']))
|
|
{
|
|
if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away !
|
|
$tags = trim(preg_replace('/\s\s+/',' ', $_POST['lf_tags'])); // Remove multiple spaces.
|
|
$linkdate=$_POST['lf_linkdate'];
|
|
$link = array('title'=>trim($_POST['lf_title']),'url'=>trim($_POST['lf_url']),'description'=>trim($_POST['lf_description']),'private'=>(isset($_POST['lf_private']) ? 1 : 0),
|
|
'linkdate'=>$linkdate,'tags'=>str_replace(',',' ',$tags));
|
|
if ($link['title']=='') $link['title']=$link['url']; // If title is empty, use the URL as title.
|
|
$LINKSDB[$linkdate] = $link;
|
|
$LINKSDB->savedb(); // save to disk
|
|
pubsubhub();
|
|
|
|
// If we are called from the bookmarklet, we must close the popup:
|
|
if (isset($_GET['source']) && $_GET['source']=='bookmarklet') { echo '<script language="JavaScript">self.close();</script>'; exit; }
|
|
$returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
|
|
$returnurl .= '#'.smallHash($linkdate); // Scroll to the link which has been edited.
|
|
header('Location: '.$returnurl); // After saving the link, redirect to the page the user was on.
|
|
exit;
|
|
}
|
|
|
|
// -------- User clicked the "Cancel" button when editing a link.
|
|
if (isset($_POST['cancel_edit']))
|
|
{
|
|
// If we are called from the bookmarklet, we must close the popup;
|
|
if (isset($_GET['source']) && $_GET['source']=='bookmarklet') { echo '<script language="JavaScript">self.close();</script>'; exit; }
|
|
$returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
|
|
$returnurl .= '#'.smallHash($_POST['lf_linkdate']); // Scroll to the link which has been edited.
|
|
header('Location: '.$returnurl); // After canceling, redirect to the page the user was on.
|
|
exit;
|
|
}
|
|
|
|
// -------- User clicked the "Delete" button when editing a link : Delete link from database.
|
|
if (isset($_POST['delete_link']))
|
|
{
|
|
if (!tokenOk($_POST['token'])) die('Wrong token.');
|
|
// We do not need to ask for confirmation:
|
|
// - confirmation is handled by javascript
|
|
// - we are protected from XSRF by the token.
|
|
$linkdate=$_POST['lf_linkdate'];
|
|
unset($LINKSDB[$linkdate]);
|
|
$LINKSDB->savedb(); // save to disk
|
|
|
|
// If we are called from the bookmarklet, we must close the popup:
|
|
if (isset($_GET['source']) && $_GET['source']=='bookmarklet') { echo '<script language="JavaScript">self.close();</script>'; exit; }
|
|
$returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
|
|
if ($returnurl=='?') { $returnurl = (isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '?'); }
|
|
header('Location: '.$returnurl); // After deleting the link, redirect to the page the user was on.
|
|
exit;
|
|
}
|
|
|
|
// -------- User clicked the "EDIT" button on a link: Display link edit form.
|
|
if (isset($_GET['edit_link']))
|
|
{
|
|
$link = $LINKSDB[$_GET['edit_link']]; // Read database
|
|
if (!$link) { header('Location: ?'); exit; } // Link not found in database.
|
|
$PAGE = new pageBuilder;
|
|
$PAGE->assign('linkcount',count($LINKSDB));
|
|
$PAGE->assign('link',$link);
|
|
$PAGE->assign('link_is_new',false);
|
|
$PAGE->assign('token',getToken()); // XSRF protection.
|
|
$PAGE->assign('http_referer',(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : ''));
|
|
$PAGE->renderPage('editlink');
|
|
exit;
|
|
}
|
|
|
|
// -------- User want to post a new link: Display link edit form.
|
|
if (isset($_GET['post']))
|
|
{
|
|
$url=$_GET['post'];
|
|
|
|
// We remove the annoying parameters added by FeedBurner and GoogleFeedProxy (?utm_source=...)
|
|
$i=strpos($url,'&utm_source='); if ($i!==false) $url=substr($url,0,$i);
|
|
$i=strpos($url,'?utm_source='); if ($i!==false) $url=substr($url,0,$i);
|
|
$i=strpos($url,'#xtor=RSS-'); if ($i!==false) $url=substr($url,0,$i);
|
|
|
|
$link_is_new = false;
|
|
$link = $LINKSDB->getLinkFromUrl($url); // Check if URL is not already in database (in this case, we will edit the existing link)
|
|
if (!$link)
|
|
{
|
|
$link_is_new = true; // This is a new link
|
|
$linkdate = strval(date('Ymd_His'));
|
|
$title = (empty($_GET['title']) ? '' : $_GET['title'] ); // Get title if it was provided in URL (by the bookmarklet).
|
|
$description=''; $tags=''; $private=0;
|
|
if (($url!='') && parse_url($url,PHP_URL_SCHEME)=='') $url = 'http://'.$url;
|
|
// If this is an HTTP link, we try go get the page to extact the title (otherwise we will to straight to the edit form.)
|
|
if (empty($title) && parse_url($url,PHP_URL_SCHEME)=='http')
|
|
{
|
|
list($status,$headers,$data) = getHTTP($url,4); // Short timeout to keep the application responsive.
|
|
// FIXME: Decode charset according to specified in either 1) HTTP response headers or 2) <head> in html
|
|
if (strpos($status,'200 OK')!==false) $title=html_entity_decode(html_extract_title($data),ENT_QUOTES,'UTF-8');
|
|
|
|
}
|
|
if ($url=='') $url='?'.smallHash($linkdate); // In case of empty URL, this is just a text (with a link that point to itself)
|
|
$link = array('linkdate'=>$linkdate,'title'=>$title,'url'=>$url,'description'=>$description,'tags'=>$tags,'private'=>0);
|
|
}
|
|
|
|
$PAGE = new pageBuilder;
|
|
$PAGE->assign('linkcount',count($LINKSDB));
|
|
$PAGE->assign('link',$link);
|
|
$PAGE->assign('link_is_new',$link_is_new);
|
|
$PAGE->assign('token',getToken()); // XSRF protection.
|
|
$PAGE->assign('http_referer',(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : ''));
|
|
$PAGE->renderPage('editlink');
|
|
exit;
|
|
}
|
|
|
|
// -------- Export as Netscape Bookmarks HTML file.
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=export'))
|
|
{
|
|
if (empty($_GET['what']))
|
|
{
|
|
$PAGE = new pageBuilder;
|
|
$PAGE->assign('linkcount',count($LINKSDB));
|
|
$PAGE->renderPage('export');
|
|
exit;
|
|
}
|
|
$exportWhat=$_GET['what'];
|
|
if (!array_intersect(array('all','public','private'),array($exportWhat))) die('What are you trying to export ???');
|
|
|
|
header('Content-Type: text/html; charset=utf-8');
|
|
header('Content-disposition: attachment; filename=bookmarks_'.$exportWhat.'_'.strval(date('Ymd_His')).'.html');
|
|
$currentdate=date('Y/m/d H:i:s');
|
|
echo <<<HTML
|
|
<!DOCTYPE NETSCAPE-Bookmark-file-1>
|
|
<!-- This is an automatically generated file.
|
|
It will be read and overwritten.
|
|
DO NOT EDIT! -->
|
|
<!-- Shaarli {$exportWhat} bookmarks export on {$currentdate} -->
|
|
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
|
|
<TITLE>Bookmarks</TITLE>
|
|
<H1>Bookmarks</H1>
|
|
HTML;
|
|
foreach($LINKSDB as $link)
|
|
{
|
|
if ($exportWhat=='all' ||
|
|
($exportWhat=='private' && $link['private']!=0) ||
|
|
($exportWhat=='public' && $link['private']==0))
|
|
{
|
|
echo '<DT><A HREF="'.htmlspecialchars($link['url']).'" ADD_DATE="'.linkdate2timestamp($link['linkdate']).'" PRIVATE="'.$link['private'].'"';
|
|
if ($link['tags']!='') echo ' TAGS="'.htmlspecialchars(str_replace(' ',',',$link['tags'])).'"';
|
|
echo '>'.htmlspecialchars($link['title'])."</A>\n";
|
|
if ($link['description']!='') echo '<DD>'.htmlspecialchars($link['description'])."\n";
|
|
}
|
|
}
|
|
exit;
|
|
}
|
|
|
|
// -------- User is uploading a file for import
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=upload'))
|
|
{
|
|
// If file is too big, some form field may be missing.
|
|
if (!isset($_POST['token']) || (!isset($_FILES)) || (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size']==0))
|
|
{
|
|
$returnurl = ( empty($_SERVER['HTTP_REFERER']) ? '?' : $_SERVER['HTTP_REFERER'] );
|
|
echo '<script language="JavaScript">alert("The file you are trying to upload is probably bigger than what this webserver can accept ('.getMaxFileSize().' bytes). Please upload in smaller chunks.");document.location=\''.htmlspecialchars($returnurl).'\';</script>';
|
|
exit;
|
|
}
|
|
if (!tokenOk($_POST['token'])) die('Wrong token.');
|
|
importFile();
|
|
exit;
|
|
}
|
|
|
|
// -------- Show upload/import dialog:
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=import'))
|
|
{
|
|
$PAGE = new pageBuilder;
|
|
$PAGE->assign('linkcount',count($LINKSDB));
|
|
$PAGE->assign('token',getToken());
|
|
$PAGE->assign('maxfilesize',getMaxFileSize());
|
|
$PAGE->renderPage('import');
|
|
exit;
|
|
}
|
|
|
|
// -------- Otherwise, simply display search form and links:
|
|
$PAGE = new pageBuilder;
|
|
$PAGE->assign('linkcount',count($LINKSDB));
|
|
buildLinkList($PAGE,$LINKSDB); // Compute list of links to display
|
|
$PAGE->renderPage('linklist');
|
|
exit;
|
|
}
|
|
|
|
// -----------------------------------------------------------------------------------------------
|
|
// Process the import file form.
|
|
function importFile()
|
|
{
|
|
if (!(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI'])) { die('Not allowed.'); }
|
|
$LINKSDB=new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
|
|
$filename=$_FILES['filetoupload']['name'];
|
|
$filesize=$_FILES['filetoupload']['size'];
|
|
$data=file_get_contents($_FILES['filetoupload']['tmp_name']);
|
|
$private = (empty($_POST['private']) ? 0 : 1); // Should the links be imported as private ?
|
|
$overwrite = !empty($_POST['overwrite']) ; // Should the imported links overwrite existing ones ?
|
|
$import_count=0;
|
|
|
|
// Sniff file type:
|
|
$type='unknown';
|
|
if (startsWith($data,'<!DOCTYPE NETSCAPE-Bookmark-file-1>')) $type='netscape'; // Netscape bookmark file (aka Firefox).
|
|
|
|
// Then import the bookmarks.
|
|
if ($type=='netscape')
|
|
{
|
|
// This is a standard Netscape-style bookmark file.
|
|
// This format is supported by all browsers (except IE, of course), also delicious, diigo and others.
|
|
foreach(explode('<DT>',$data) as $html) // explode is very fast
|
|
{
|
|
$link = array('linkdate'=>'','title'=>'','url'=>'','description'=>'','tags'=>'','private'=>0);
|
|
$d = explode('<DD>',$html);
|
|
if (startswith($d[0],'<A '))
|
|
{
|
|
$link['description'] = (isset($d[1]) ? html_entity_decode(trim($d[1]),ENT_QUOTES,'UTF-8') : ''); // Get description (optional)
|
|
preg_match('!<A .*?>(.*?)</A>!i',$d[0],$matches); $link['title'] = (isset($matches[1]) ? trim($matches[1]) : ''); // Get title
|
|
$link['title'] = html_entity_decode($link['title'],ENT_QUOTES,'UTF-8');
|
|
preg_match_all('! ([A-Z_]+)=\"(.*?)"!i',$html,$matches,PREG_SET_ORDER); // Get all other attributes
|
|
$raw_add_date=0;
|
|
foreach($matches as $m)
|
|
{
|
|
$attr=$m[1]; $value=$m[2];
|
|
if ($attr=='HREF') $link['url']=html_entity_decode($value,ENT_QUOTES,'UTF-8');
|
|
elseif ($attr=='ADD_DATE') $raw_add_date=intval($value);
|
|
elseif ($attr=='PRIVATE') $link['private']=($value=='0'?0:1);
|
|
elseif ($attr=='TAGS') $link['tags']=html_entity_decode(str_replace(',',' ',$value),ENT_QUOTES,'UTF-8');
|
|
}
|
|
if ($link['url']!='')
|
|
{
|
|
if ($private==1) $link['private']=1;
|
|
$dblink = $LINKSDB->getLinkFromUrl($link['url']); // See if the link is already in database.
|
|
if ($dblink==false)
|
|
{ // Link not in database, let's import it...
|
|
if (empty($raw_add_date)) $raw_add_date=time(); // In case of shitty bookmark file with no ADD_DATE
|
|
|
|
// Make sure date/time is not already used by another link.
|
|
// (Some bookmark files have several different links with the same ADD_DATE)
|
|
// We increment date by 1 second until we find a date which is not used in db.
|
|
// (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
|
|
while (!empty($LINKSDB[date('Ymd_His',$raw_add_date)])) { $raw_add_date++; }// Yes, I know it's ugly.
|
|
$link['linkdate']=date('Ymd_His',$raw_add_date);
|
|
$LINKSDB[$link['linkdate']] = $link;
|
|
$import_count++;
|
|
}
|
|
else // link already present in database.
|
|
{
|
|
if ($overwrite)
|
|
{ // If overwrite is required, we import link data, except date/time.
|
|
$link['linkdate']=$dblink['linkdate'];
|
|
$LINKSDB[$link['linkdate']] = $link;
|
|
$import_count++;
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
$LINKSDB->savedb();
|
|
|
|
echo '<script language="JavaScript">alert("File '.$filename.' ('.$filesize.' bytes) was successfully processed: '.$import_count.' links imported.");document.location=\'?\';</script>';
|
|
}
|
|
else
|
|
{
|
|
echo '<script language="JavaScript">alert("File '.$filename.' ('.$filesize.' bytes) has an unknown file format. Nothing was imported.");document.location=\'?\';</script>';
|
|
}
|
|
}
|
|
|
|
// -----------------------------------------------------------------------------------------------
|
|
// Template for the list of links (<div id="linklist">)
|
|
// This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
|
|
function buildLinkList($PAGE,$LINKSDB)
|
|
{
|
|
// ---- Filter link database according to parameters
|
|
$linksToDisplay=array();
|
|
$search_type='';
|
|
$search_crits='';
|
|
if (isset($_GET['searchterm'])) // Fulltext search
|
|
{
|
|
$linksToDisplay = $LINKSDB->filterFulltext(trim($_GET['searchterm']));
|
|
$search_crits=htmlspecialchars(trim($_GET['searchterm']));
|
|
$search_type='fulltext';
|
|
}
|
|
elseif (isset($_GET['searchtags'])) // Search by tag
|
|
{
|
|
$linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
|
|
$search_crits=explode(' ',trim($_GET['searchtags']));
|
|
$search_type='tags';
|
|
}
|
|
elseif (isset($_SERVER['QUERY_STRING']) && preg_match('/[a-zA-Z0-9-_@]{6}(&.+?)?/',$_SERVER['QUERY_STRING'])) // Detect smallHashes in URL
|
|
{
|
|
$linksToDisplay = $LINKSDB->filterSmallHash(substr(trim($_SERVER["QUERY_STRING"], '/'),0,6));
|
|
if (count($linksToDisplay)==0)
|
|
{
|
|
header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
|
|
echo '<h1>404 Not found.</h1>Oh crap. The link you are trying to reach does not exist or has been deleted.';
|
|
echo '<br>You would mind <a href="?">clicking here</a> ?';
|
|
exit;
|
|
}
|
|
$search_type='permalink';
|
|
}
|
|
else
|
|
$linksToDisplay = $LINKSDB; // otherwise, display without filtering.
|
|
|
|
// Option: Show only private links
|
|
if (!empty($_SESSION['privateonly']))
|
|
{
|
|
$tmp = array();
|
|
foreach($linksToDisplay as $linkdate=>$link)
|
|
{
|
|
if ($link['private']!=0) $tmp[$linkdate]=$link;
|
|
}
|
|
$linksToDisplay=$tmp;
|
|
}
|
|
|
|
// ---- Handle paging.
|
|
/* Can someone explain to me why you get the following error when using array_keys() on an object which implements the interface ArrayAccess ???
|
|
"Warning: array_keys() expects parameter 1 to be array, object given in ... "
|
|
If my class implements ArrayAccess, why won't array_keys() accept it ? ( $keys=array_keys($linksToDisplay); )
|
|
*/
|
|
$keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // Stupid and ugly. Thanks php.
|
|
|
|
// If there is only a single link, we change on-the-fly the title of the page.
|
|
if (count($linksToDisplay)==1) $GLOBALS['pagetitle'] = $linksToDisplay[$keys[0]]['title'].' - '.$GLOBALS['title'];
|
|
|
|
// Select articles according to paging.
|
|
$pagecount = ceil(count($keys)/$_SESSION['LINKS_PER_PAGE']);
|
|
$pagecount = ($pagecount==0 ? 1 : $pagecount);
|
|
$page=( empty($_GET['page']) ? 1 : intval($_GET['page']));
|
|
$page = ( $page<1 ? 1 : $page );
|
|
$page = ( $page>$pagecount ? $pagecount : $page );
|
|
$i = ($page-1)*$_SESSION['LINKS_PER_PAGE']; // Start index.
|
|
$end = $i+$_SESSION['LINKS_PER_PAGE'];
|
|
$linkDisp=array(); // Links to display
|
|
while ($i<$end && $i<count($keys))
|
|
{
|
|
$link = $linksToDisplay[$keys[$i]];
|
|
$link['description']=nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description']))));
|
|
$title=$link['title'];
|
|
$classLi = $i%2!=0 ? '' : 'publicLinkHightLight';
|
|
$link['class'] = ($link['private']==0 ? $classLi : 'private');
|
|
$link['localdate']=linkdate2locale($link['linkdate']);
|
|
$link['taglist']=explode(' ',$link['tags']);
|
|
$linkDisp[$keys[$i]] = $link;
|
|
$i++;
|
|
}
|
|
|
|
// Compute paging navigation
|
|
$searchterm= ( empty($_GET['searchterm']) ? '' : '&searchterm='.$_GET['searchterm'] );
|
|
$searchtags= ( empty($_GET['searchtags']) ? '' : '&searchtags='.$_GET['searchtags'] );
|
|
$paging='';
|
|
$previous_page_url=''; if ($i!=count($keys)) $previous_page_url='?page='.($page+1).$searchterm.$searchtags;
|
|
$next_page_url='';if ($page>1) $next_page_url='?page='.($page-1).$searchterm.$searchtags;
|
|
|
|
$token = ''; if (isLoggedIn()) $token=getToken();
|
|
|
|
// Fill all template fields.
|
|
$PAGE->assign('linkcount',count($LINKSDB));
|
|
$PAGE->assign('previous_page_url',$previous_page_url);
|
|
$PAGE->assign('next_page_url',$next_page_url);
|
|
$PAGE->assign('page_current',$page);
|
|
$PAGE->assign('page_max',$pagecount);
|
|
$PAGE->assign('result_count',count($linksToDisplay));
|
|
$PAGE->assign('search_type',$search_type);
|
|
$PAGE->assign('search_crits',$search_crits);
|
|
$PAGE->assign('redirector',empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector']); // optional redirector URL
|
|
$PAGE->assign('token',$token);
|
|
$PAGE->assign('links',$linkDisp);
|
|
return;
|
|
}
|
|
|
|
// Compute the thumbnail for a link.
|
|
//
|
|
// with a link to the original URL.
|
|
// Understands various services (youtube.com...)
|
|
// Input: $url = url for which the thumbnail must be found.
|
|
// $href = if provided, this URL will be followed instead of $url
|
|
// Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
|
|
// Some of them may be missing.
|
|
// Return an empty array if no thumbnail available.
|
|
function computeThumbnail($url,$href=false)
|
|
{
|
|
if (!$GLOBALS['config']['ENABLE_THUMBNAILS']) return array();
|
|
if ($href==false) $href=$url;
|
|
|
|
// For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
|
|
// (eg. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg )
|
|
// ^^^^^^^^^^^ ^^^^^^^^^^^
|
|
$domain = parse_url($url,PHP_URL_HOST);
|
|
if ($domain=='youtube.com' || $domain=='www.youtube.com')
|
|
{
|
|
parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract video ID and get thumbnail
|
|
if (!empty($params['v'])) return array('src'=>'http://img.youtube.com/vi/'.$params['v'].'/default.jpg',
|
|
'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
|
|
}
|
|
if ($domain=='youtu.be') // Youtube short links
|
|
{
|
|
$path = parse_url($url,PHP_URL_PATH);
|
|
return array('src'=>'http://img.youtube.com/vi'.$path.'/default.jpg',
|
|
'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
|
|
}
|
|
if ($domain=='pix.toile-libre.org') // pix.toile-libre.org image hosting
|
|
{
|
|
parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract image filename.
|
|
if (!empty($params) && !empty($params['img'])) return array('src'=>'http://pix.toile-libre.org/upload/thumb/'.urlencode($params['img']),
|
|
'href'=>$href,'style'=>'max-width:120px; max-height:150px','alt'=>'pix.toile-libre.org thumbnail');
|
|
}
|
|
|
|
if ($domain=='imgur.com')
|
|
{
|
|
$path = parse_url($url,PHP_URL_PATH);
|
|
if (startsWith($path,'/a/')) return array(); // Thumbnails for albums are not available.
|
|
if (startsWith($path,'/r/')) return array('src'=>'http://i.imgur.com/'.basename($path).'s.jpg',
|
|
'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
|
|
if (startsWith($path,'/gallery/')) return array('src'=>'http://i.imgur.com'.substr($path,8).'s.jpg',
|
|
'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
|
|
|
|
if (substr_count($path,'/')==1) return array('src'=>'http://i.imgur.com/'.substr($path,1).'s.jpg',
|
|
'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
|
|
}
|
|
if ($domain=='i.imgur.com')
|
|
{
|
|
$pi = pathinfo(parse_url($url,PHP_URL_PATH));
|
|
if (!empty($pi['filename'])) return array('src'=>'http://i.imgur.com/'.$pi['filename'].'s.jpg',
|
|
'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
|
|
}
|
|
if ($domain=='dailymotion.com' || $domain=='www.dailymotion.com')
|
|
{
|
|
if (strpos($url,'dailymotion.com/video/')!==false)
|
|
{
|
|
$thumburl=str_replace('dailymotion.com/video/','dailymotion.com/thumbnail/video/',$url);
|
|
return array('src'=>$thumburl,
|
|
'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'DailyMotion thumbnail');
|
|
}
|
|
}
|
|
if (endsWith($domain,'.imageshack.us'))
|
|
{
|
|
$ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
|
|
if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
|
|
{
|
|
$thumburl = substr($url,0,strlen($url)-strlen($ext)).'th.'.$ext;
|
|
return array('src'=>$thumburl,
|
|
'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'imageshack.us thumbnail');
|
|
}
|
|
}
|
|
|
|
// Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
|
|
// So we deport the thumbnail generation in order not to slow down page generation
|
|
// (and we also cache the thumbnail)
|
|
|
|
if (!$GLOBALS['config']['ENABLE_LOCALCACHE']) return array(); // If local cache is disabled, no thumbnails for services which require the use a local cache.
|
|
|
|
if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')
|
|
|| $domain=='vimeo.com'
|
|
|| $domain=='ted.com' || endsWith($domain,'.ted.com')
|
|
|| $domain=='xkcd.com' || endsWith($domain,'.xkcd.com')
|
|
)
|
|
{
|
|
if ($domain=='vimeo.com')
|
|
{ // Make sure this vimeo url points to a video (/xxx... where xxx is numeric)
|
|
$path = parse_url($url,PHP_URL_PATH);
|
|
if (!preg_match('!/\d+.+?!',$path)) return array(); // This is not a single video URL.
|
|
}
|
|
if ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
|
|
{ // Make sure this url points to a single comic (/xxx... where xxx is numeric)
|
|
$path = parse_url($url,PHP_URL_PATH);
|
|
if (!preg_match('!/\d+.+?!',$path)) return array();
|
|
}
|
|
if ($domain=='ted.com' || endsWith($domain,'.ted.com'))
|
|
{ // Make sure this TED url points to a video (/talks/...)
|
|
$path = parse_url($url,PHP_URL_PATH);
|
|
if ("/talks/" !== substr($path,0,7)) return array(); // This is not a single video URL.
|
|
}
|
|
$sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
|
|
return array('src'=>indexUrl().'?do=genthumbnail&hmac='.htmlspecialchars($sign).'&url='.urlencode($url),
|
|
'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
|
|
}
|
|
|
|
// For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
|
|
// Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
|
|
// But using the extension will do.
|
|
$ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
|
|
if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
|
|
{
|
|
$sign = hash_hmac('sha256', $url, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
|
|
return array('src'=>indexUrl().'?do=genthumbnail&hmac='.htmlspecialchars($sign).'&url='.urlencode($url),
|
|
'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
|
|
}
|
|
return array(); // No thumbnail.
|
|
|
|
}
|
|
|
|
|
|
// Returns the HTML code to display a thumbnail for a link
|
|
// with a link to the original URL.
|
|
// Understands various services (youtube.com...)
|
|
// Input: $url = url for which the thumbnail must be found.
|
|
// $href = if provided, this URL will be followed instead of $url
|
|
// Returns '' if no thumbnail available.
|
|
function thumbnail($url,$href=false)
|
|
{
|
|
$t = computeThumbnail($url,$href);
|
|
if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
|
|
|
|
$html='<a href="'.htmlspecialchars($t['href']).'"><img src="'.htmlspecialchars($t['src']).'"';
|
|
if (!empty($t['width'])) $html.=' width="'.htmlspecialchars($t['width']).'"';
|
|
if (!empty($t['height'])) $html.=' height="'.htmlspecialchars($t['height']).'"';
|
|
if (!empty($t['style'])) $html.=' style="'.htmlspecialchars($t['style']).'"';
|
|
if (!empty($t['alt'])) $html.=' alt="'.htmlspecialchars($t['alt']).'"';
|
|
$html.='></a>';
|
|
return $html;
|
|
}
|
|
|
|
|
|
// Returns the HTML code to display a thumbnail for a link
|
|
// for the picture wall (using lazy image loading)
|
|
// Understands various services (youtube.com...)
|
|
// Input: $url = url for which the thumbnail must be found.
|
|
// $href = if provided, this URL will be followed instead of $url
|
|
// Returns '' if no thumbnail available.
|
|
function lazyThumbnail($url,$href=false)
|
|
{
|
|
$t = computeThumbnail($url,$href);
|
|
if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
|
|
|
|
$html='<a href="'.htmlspecialchars($t['href']).'">';
|
|
|
|
// Lazy image (only loaded by javascript when in the viewport).
|
|
$html.='<img class="lazyimage" src="#" data-original="'.htmlspecialchars($t['src']).'"';
|
|
if (!empty($t['width'])) $html.=' width="'.htmlspecialchars($t['width']).'"';
|
|
if (!empty($t['height'])) $html.=' height="'.htmlspecialchars($t['height']).'"';
|
|
if (!empty($t['style'])) $html.=' style="'.htmlspecialchars($t['style']).'"';
|
|
if (!empty($t['alt'])) $html.=' alt="'.htmlspecialchars($t['alt']).'"';
|
|
$html.='>';
|
|
|
|
// No-javascript fallback:
|
|
$html.='<noscript><img src="'.htmlspecialchars($t['src']).'"';
|
|
if (!empty($t['width'])) $html.=' width="'.htmlspecialchars($t['width']).'"';
|
|
if (!empty($t['height'])) $html.=' height="'.htmlspecialchars($t['height']).'"';
|
|
if (!empty($t['style'])) $html.=' style="'.htmlspecialchars($t['style']).'"';
|
|
if (!empty($t['alt'])) $html.=' alt="'.htmlspecialchars($t['alt']).'"';
|
|
$html.='></noscript></a>';
|
|
|
|
return $html;
|
|
}
|
|
|
|
|
|
// -----------------------------------------------------------------------------------------------
|
|
// Installation
|
|
// This function should NEVER be called if the file data/config.php exists.
|
|
function install()
|
|
{
|
|
// On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
|
|
if (endsWith($_SERVER['SERVER_NAME'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
|
|
|
|
|
|
// This part makes sure sessions works correctly.
|
|
// (Because on some hosts, session.save_path may not be set correctly,
|
|
// or we may not have write access to it.)
|
|
if (isset($_GET['test_session']) && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working'))
|
|
{ // Step 2: Check if data in session is correct.
|
|
echo '<pre>Sessions do not seem to work correctly on your server.<br>';
|
|
echo 'Make sure the variable session.save_path is set correctly in your php config, and that you have write access to it.<br>';
|
|
echo 'It currently points to '.session_save_path().'<br><br><a href="?">Click to try again.</a></pre>';
|
|
die;
|
|
}
|
|
if (!isset($_SESSION['session_tested']))
|
|
{ // Step 1 : Try to store data in session and reload page.
|
|
$_SESSION['session_tested'] = 'Working'; // Try to set a variable in session.
|
|
header('Location: '.indexUrl().'?test_session'); // Redirect to check stored data.
|
|
}
|
|
if (isset($_GET['test_session']))
|
|
{ // Step 3: Sessions are ok. Remove test parameter from URL.
|
|
header('Location: '.indexUrl());
|
|
}
|
|
|
|
|
|
if (!empty($_POST['setlogin']) && !empty($_POST['setpassword']))
|
|
{
|
|
$tz = 'UTC';
|
|
if (!empty($_POST['continent']) && !empty($_POST['city']))
|
|
if (isTZvalid($_POST['continent'],$_POST['city']))
|
|
$tz = $_POST['continent'].'/'.$_POST['city'];
|
|
$GLOBALS['timezone'] = $tz;
|
|
// Everything is ok, let's create config file.
|
|
$GLOBALS['login'] = $_POST['setlogin'];
|
|
$GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
|
|
$GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
|
|
$GLOBALS['title'] = (empty($_POST['title']) ? 'Shared links on '.htmlspecialchars(indexUrl()) : $_POST['title'] );
|
|
writeConfig();
|
|
echo '<script language="JavaScript">alert("Shaarli is now configured. Please enter your login/password and start shaaring your links !");document.location=\'?do=login\';</script>';
|
|
exit;
|
|
}
|
|
|
|
// Display config form:
|
|
list($timezone_form,$timezone_js) = templateTZform();
|
|
$timezone_html=''; if ($timezone_form!='') $timezone_html='<tr><td valign="top"><b>Timezone:</b></td><td>'.$timezone_form.'</td></tr>';
|
|
|
|
$PAGE = new pageBuilder;
|
|
$PAGE->assign('timezone_html',$timezone_html);
|
|
$PAGE->assign('timezone_js',$timezone_js);
|
|
$PAGE->renderPage('install');
|
|
exit;
|
|
}
|
|
|
|
// Generates the timezone selection form and javascript.
|
|
// Input: (optional) current timezone (can be 'UTC/UTC'). It will be pre-selected.
|
|
// Output: array(html,js)
|
|
// Example: list($htmlform,$js) = templateTZform('Europe/Paris'); // Europe/Paris pre-selected.
|
|
// Returns array('','') if server does not support timezones list. (eg. php 5.1 on free.fr)
|
|
function templateTZform($ptz=false)
|
|
{
|
|
if (function_exists('timezone_identifiers_list')) // because of old php version (5.1) which can be found on free.fr
|
|
{
|
|
// Try to split the provided timezone.
|
|
if ($ptz==false) { $l=timezone_identifiers_list(); $ptz=$l[0]; }
|
|
$spos=strpos($ptz,'/'); $pcontinent=substr($ptz,0,$spos); $pcity=substr($ptz,$spos+1);
|
|
|
|
// Display config form:
|
|
$timezone_form = '';
|
|
$timezone_js = '';
|
|
// The list is in the forme "Europe/Paris", "America/Argentina/Buenos_Aires"...
|
|
// We split the list in continents/cities.
|
|
$continents = array();
|
|
$cities = array();
|
|
foreach(timezone_identifiers_list() as $tz)
|
|
{
|
|
if ($tz=='UTC') $tz='UTC/UTC';
|
|
$spos = strpos($tz,'/');
|
|
if ($spos!==false)
|
|
{
|
|
$continent=substr($tz,0,$spos); $city=substr($tz,$spos+1);
|
|
$continents[$continent]=1;
|
|
if (!isset($cities[$continent])) $cities[$continent]='';
|
|
$cities[$continent].='<option value="'.$city.'"'.($pcity==$city?'selected':'').'>'.$city.'</option>';
|
|
}
|
|
}
|
|
$continents_html = '';
|
|
$continents = array_keys($continents);
|
|
foreach($continents as $continent)
|
|
$continents_html.='<option value="'.$continent.'"'.($pcontinent==$continent?'selected':'').'>'.$continent.'</option>';
|
|
$cities_html = $cities[$pcontinent];
|
|
$timezone_form = "Continent: <select name=\"continent\" id=\"continent\" onChange=\"onChangecontinent();\">${continents_html}</select><br /><br />";
|
|
$timezone_form .= "City: <select name=\"city\" id=\"city\">${cities[$pcontinent]}</select><br /><br />";
|
|
$timezone_js = "<script language=\"JavaScript\">";
|
|
$timezone_js .= "function onChangecontinent(){document.getElementById(\"city\").innerHTML = citiescontinent[document.getElementById(\"continent\").value];}";
|
|
$timezone_js .= "var citiescontinent = ".json_encode($cities).";" ;
|
|
$timezone_js .= "</script>" ;
|
|
return array($timezone_form,$timezone_js);
|
|
}
|
|
return array('','');
|
|
}
|
|
|
|
// Tells if a timezone is valid or not.
|
|
// If not valid, returns false.
|
|
// If system does not support timezone list, returns false.
|
|
function isTZvalid($continent,$city)
|
|
{
|
|
$tz = $continent.'/'.$city;
|
|
if (function_exists('timezone_identifiers_list')) // because of old php version (5.1) which can be found on free.fr
|
|
{
|
|
if (in_array($tz, timezone_identifiers_list())) // it's a valid timezone ?
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
// Webservices (for use with jQuery/jQueryUI)
|
|
// eg. index.php?ws=tags&term=minecr
|
|
function processWS()
|
|
{
|
|
if (empty($_GET['ws']) || empty($_GET['term'])) return;
|
|
$term = $_GET['term'];
|
|
$LINKSDB=new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
|
|
header('Content-Type: application/json; charset=utf-8');
|
|
|
|
// Search in tags (case insentitive, cumulative search)
|
|
if ($_GET['ws']=='tags')
|
|
{
|
|
$tags=explode(' ',str_replace(',',' ',$term)); $last = array_pop($tags); // Get the last term ("a b c d" ==> "a b c", "d")
|
|
$addtags=''; if ($tags) $addtags=implode(' ',$tags).' '; // We will pre-pend previous tags
|
|
$suggested=array();
|
|
/* To speed up things, we store list of tags in session */
|
|
if (empty($_SESSION['tags'])) $_SESSION['tags'] = $LINKSDB->allTags();
|
|
foreach($_SESSION['tags'] as $key=>$value)
|
|
{
|
|
if (startsWith($key,$last,$case=false) && !in_array($key,$tags)) $suggested[$addtags.$key.' ']=0;
|
|
}
|
|
echo json_encode(array_keys($suggested));
|
|
exit;
|
|
}
|
|
|
|
// Search a single tag (case sentitive, single tag search)
|
|
if ($_GET['ws']=='singletag')
|
|
{
|
|
/* To speed up things, we store list of tags in session */
|
|
if (empty($_SESSION['tags'])) $_SESSION['tags'] = $LINKSDB->allTags();
|
|
foreach($_SESSION['tags'] as $key=>$value)
|
|
{
|
|
if (startsWith($key,$term,$case=true)) $suggested[$key]=0;
|
|
}
|
|
echo json_encode(array_keys($suggested));
|
|
exit;
|
|
}
|
|
}
|
|
|
|
// Re-write configuration file according to globals.
|
|
// Requires some $GLOBALS to be set (login,hash,salt,title).
|
|
// If the config file cannot be saved, an error message is dislayed and the user is redirected to "Tools" menu.
|
|
// (otherwise, the function simply returns.)
|
|
function writeConfig()
|
|
{
|
|
if (is_file($GLOBALS['config']['CONFIG_FILE']) && !isLoggedIn()) die('You are not authorized to alter config.'); // Only logged in user can alter config.
|
|
if (empty($GLOBALS['redirector'])) $GLOBALS['redirector']='';
|
|
if (empty($GLOBALS['disablesessionprotection'])) $GLOBALS['disablesessionprotection']=false;
|
|
$config='<?php $GLOBALS[\'login\']='.var_export($GLOBALS['login'],true).'; $GLOBALS[\'hash\']='.var_export($GLOBALS['hash'],true).'; $GLOBALS[\'salt\']='.var_export($GLOBALS['salt'],true).'; ';
|
|
$config .='$GLOBALS[\'timezone\']='.var_export($GLOBALS['timezone'],true).'; date_default_timezone_set('.var_export($GLOBALS['timezone'],true).'); $GLOBALS[\'title\']='.var_export($GLOBALS['title'],true).';';
|
|
$config .= '$GLOBALS[\'redirector\']='.var_export($GLOBALS['redirector'],true).'; ';
|
|
$config .= '$GLOBALS[\'disablesessionprotection\']='.var_export($GLOBALS['disablesessionprotection'],true).'; ';
|
|
$config .= ' ?>';
|
|
if (!file_put_contents($GLOBALS['config']['CONFIG_FILE'],$config) || strcmp(file_get_contents($GLOBALS['config']['CONFIG_FILE']),$config)!=0)
|
|
{
|
|
echo '<script language="JavaScript">alert("Shaarli could not create the config file. Please make sure Shaarli has the right to write in the folder is it installed in.");document.location=\'?\';</script>';
|
|
exit;
|
|
}
|
|
}
|
|
|
|
/* Because some f*cking services like Flickr require an extra HTTP request to get the thumbnail URL,
|
|
I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
|
|
The following function takes the URL a link (eg. a flickr page) and return the proper thumbnail.
|
|
This function is called by passing the url:
|
|
http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
|
|
[URL] is the URL of the link (eg. a flickr page)
|
|
[HMAC] is the signature for the [URL] (so that these URL cannot be forged).
|
|
The function below will fetch the image from the webservice and store it in the cache.
|
|
*/
|
|
function genThumbnail()
|
|
{
|
|
// Make sure the parameters in the URL were generated by us.
|
|
$sign = hash_hmac('sha256', $_GET['url'], $GLOBALS['salt']);
|
|
if ($sign!=$_GET['hmac']) die('Naughty boy !');
|
|
|
|
// Let's see if we don't already have the image for this URL in the cache.
|
|
$thumbname=hash('sha1',$_GET['url']).'.jpg';
|
|
if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$thumbname))
|
|
{ // We have the thumbnail, just serve it:
|
|
header('Content-Type: image/jpeg');
|
|
echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname);
|
|
return;
|
|
}
|
|
// We may also serve a blank image (if service did not respond)
|
|
$blankname=hash('sha1',$_GET['url']).'.gif';
|
|
if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$blankname))
|
|
{
|
|
header('Content-Type: image/gif');
|
|
echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname);
|
|
return;
|
|
}
|
|
|
|
// Otherwise, generate the thumbnail.
|
|
$url = $_GET['url'];
|
|
$domain = parse_url($url,PHP_URL_HOST);
|
|
|
|
if ($domain=='flickr.com' || endsWith($domain,'.flickr.com'))
|
|
{
|
|
// Crude replacement to handle new Flickr domain policy (They prefer www. now)
|
|
$url = str_replace('http://flickr.com/','http://www.flickr.com/',$url);
|
|
|
|
// Is this a link to an image, or to a flickr page ?
|
|
$imageurl='';
|
|
if (endswith(parse_url($url,PHP_URL_PATH),'.jpg'))
|
|
{ // This is a direct link to an image. eg. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
|
|
preg_match('!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!',$url,$matches);
|
|
if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg';
|
|
}
|
|
else // this is a flickr page (html)
|
|
{
|
|
list($httpstatus,$headers,$data) = getHTTP($url,20); // Get the flickr html page.
|
|
if (strpos($httpstatus,'200 OK')!==false)
|
|
{
|
|
// Flickr now nicely provides the URL of the thumbnail in each flickr page.
|
|
preg_match('!<link rel=\"image_src\" href=\"(.+?)\"!',$data,$matches);
|
|
if (!empty($matches[1])) $imageurl=$matches[1];
|
|
|
|
// In albums (and some other pages), the link rel="image_src" is not provided,
|
|
// but flickr provides:
|
|
// <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
|
|
if ($imageurl=='')
|
|
{
|
|
preg_match('!<meta property=\"og:image\" content=\"(.+?)\"!',$data,$matches);
|
|
if (!empty($matches[1])) $imageurl=$matches[1];
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($imageurl!='')
|
|
{ // Let's download the image.
|
|
list($httpstatus,$headers,$data) = getHTTP($imageurl,10); // Image is 240x120, so 10 seconds to download should be enough.
|
|
if (strpos($httpstatus,'200 OK')!==false)
|
|
{
|
|
file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname,$data); // Save image to cache.
|
|
header('Content-Type: image/jpeg');
|
|
echo $data;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
elseif ($domain=='vimeo.com' )
|
|
{
|
|
// This is more complex: we have to perform a HTTP request, then parse the result.
|
|
// Maybe we should deport this to javascript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
|
|
$vid = substr(parse_url($url,PHP_URL_PATH),1);
|
|
list($httpstatus,$headers,$data) = getHTTP('http://vimeo.com/api/v2/video/'.htmlspecialchars($vid).'.php',5);
|
|
if (strpos($httpstatus,'200 OK')!==false)
|
|
{
|
|
$t = unserialize($data);
|
|
$imageurl = $t[0]['thumbnail_medium'];
|
|
// Then we download the image and serve it to our client.
|
|
list($httpstatus,$headers,$data) = getHTTP($imageurl,10);
|
|
if (strpos($httpstatus,'200 OK')!==false)
|
|
{
|
|
file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname,$data); // Save image to cache.
|
|
header('Content-Type: image/jpeg');
|
|
echo $data;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
elseif ($domain=='ted.com' || endsWith($domain,'.ted.com'))
|
|
{
|
|
// The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
|
|
// http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
|
|
// <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
|
|
list($httpstatus,$headers,$data) = getHTTP($url,5);
|
|
if (strpos($httpstatus,'200 OK')!==false)
|
|
{
|
|
// Extract the link to the thumbnail
|
|
preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!',$data,$matches);
|
|
if (!empty($matches[1]))
|
|
{ // Let's download the image.
|
|
$imageurl=$matches[1];
|
|
list($httpstatus,$headers,$data) = getHTTP($imageurl,20); // No control on image size, so wait long enough.
|
|
if (strpos($httpstatus,'200 OK')!==false)
|
|
{
|
|
$filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
|
|
file_put_contents($filepath,$data); // Save image to cache.
|
|
if (resizeImage($filepath))
|
|
{
|
|
header('Content-Type: image/jpeg');
|
|
echo file_get_contents($filepath);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
elseif ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
|
|
{
|
|
// There is no thumbnail available for xkcd comics, so download the whole image and resize it.
|
|
// http://xkcd.com/327/
|
|
// <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
|
|
list($httpstatus,$headers,$data) = getHTTP($url,5);
|
|
if (strpos($httpstatus,'200 OK')!==false)
|
|
{
|
|
// Extract the link to the thumbnail
|
|
preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!',$data,$matches);
|
|
if (!empty($matches[1]))
|
|
{ // Let's download the image.
|
|
$imageurl=$matches[1];
|
|
list($httpstatus,$headers,$data) = getHTTP($imageurl,20); // No control on image size, so wait long enough.
|
|
if (strpos($httpstatus,'200 OK')!==false)
|
|
{
|
|
$filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
|
|
file_put_contents($filepath,$data); // Save image to cache.
|
|
if (resizeImage($filepath))
|
|
{
|
|
header('Content-Type: image/jpeg');
|
|
echo file_get_contents($filepath);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
else
|
|
{
|
|
// For all other domains, we try to download the image and make a thumbnail.
|
|
list($httpstatus,$headers,$data) = getHTTP($url,30); // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
|
|
if (strpos($httpstatus,'200 OK')!==false)
|
|
{
|
|
$filepath=$GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
|
|
file_put_contents($filepath,$data); // Save image to cache.
|
|
if (resizeImage($filepath))
|
|
{
|
|
header('Content-Type: image/jpeg');
|
|
echo file_get_contents($filepath);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// Otherwise, return an empty image (8x8 transparent gif)
|
|
$blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7');
|
|
file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname,$blankgif); // Also put something in cache so that this URL is not requested twice.
|
|
header('Content-Type: image/gif');
|
|
echo $blankgif;
|
|
}
|
|
|
|
// Make a thumbnail of the image (to width: 120 pixels)
|
|
// Returns true if success, false otherwise.
|
|
function resizeImage($filepath)
|
|
{
|
|
if (!function_exists('imagecreatefromjpeg')) return false; // GD not present: no thumbnail possible.
|
|
|
|
// Trick: some stupid people rename GIF as JPEG... or else.
|
|
// So we really try to open each image type whatever the extension is.
|
|
$header=file_get_contents($filepath,false,NULL,0,256); // Read first 256 bytes and try to sniff file type.
|
|
$im=false;
|
|
$i=strpos($header,'GIF8'); if (($i!==false) && ($i==0)) $im = imagecreatefromgif($filepath); // Well this is crude, but it should be enough.
|
|
$i=strpos($header,'PNG'); if (($i!==false) && ($i==1)) $im = imagecreatefrompng($filepath);
|
|
$i=strpos($header,'JFIF'); if ($i!==false) $im = imagecreatefromjpeg($filepath);
|
|
if (!$im) return false; // Unable to open image (corrupted or not an image)
|
|
$w = imagesx($im);
|
|
$h = imagesy($im);
|
|
$ystart = 0; $yheight=$h;
|
|
if ($h>$w) { $ystart= ($h/2)-($w/2); $yheight=$w/2; }
|
|
$nw = 120; // Desired width
|
|
$nh = min(floor(($h*$nw)/$w),120); // Compute new width/height, but maximum 120 pixels height.
|
|
// Resize image:
|
|
$im2 = imagecreatetruecolor($nw,$nh);
|
|
imagecopyresampled($im2, $im, 0, 0, 0, $ystart, $nw, $nh, $w, $yheight);
|
|
imageinterlace($im2,true); // For progressive JPEG.
|
|
$tempname=$filepath.'_TEMP.jpg';
|
|
imagejpeg($im2, $tempname, 90);
|
|
imagedestroy($im);
|
|
imagedestroy($im2);
|
|
unlink($filepath);
|
|
rename($tempname,$filepath); // Overwrite original picture with thumbnail.
|
|
return true;
|
|
}
|
|
|
|
// Invalidate caches when the database is changed or the user logs out.
|
|
// (eg. tags cache).
|
|
function invalidateCaches()
|
|
{
|
|
unset($_SESSION['tags']); // Purge cache attached to session.
|
|
pageCache::purgeCache(); // Purge page cache shared by sessions.
|
|
}
|
|
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=genthumbnail')) { genThumbnail(); exit; } // Thumbnail generation/cache does not need the link database.
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=rss')) { showRSS(); exit; }
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=atom')) { showATOM(); exit; }
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=dailyrss')) { showDailyRSS(); exit; }
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=daily')) { showDaily(); exit; }
|
|
if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'ws=')) { processWS(); exit; } // Webservices (for jQuery/jQueryUI)
|
|
if (!isset($_SESSION['LINKS_PER_PAGE'])) $_SESSION['LINKS_PER_PAGE']=$GLOBALS['config']['LINKS_PER_PAGE'];
|
|
renderPage();
|
|
?>
|